Article

Alcohol consumption and prostate cancer risk: A meta-analysis of the dose-risk relation

November 2011
European Journal of Cancer Prevention 21(4):350-9

DOI:10.1097/CEJ.0b013e32834dbc11

Source
PubMed

Authors:

Matteo Rota

University of Brescia

Lorenza Scotti

University of Piemonte Orientale Amedeo Avogadro

Federica Turati

University of Milan

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Inconsistent results on the relationship between alcohol drinking and prostate cancer have been found. In order to provide a definite quantification of the dose-risk relation, we investigated the risk of prostate cancer at different levels of alcohol consumption, by conducting a meta-analysis of epidemiological studies. We performed a literature search using PubMed of all case-control and cohort studies published as original articles in English up to December 2010. We identified 50 case-control and 22 cohort studies, including a total of 52 899 prostate cancer cases. We derived pooled meta-analytic estimates using random-effects models, taking into account the correlation between estimates. We performed a dose-risk analysis using nonlinear random-effects meta-regression models. The overall relative risk for any alcohol drinking compared with non/occasional drinking was 1.06 [95% confidence interval (CI), 1.01-1.10]. The relative risks were 1.05 (95% CI, 1.02-1.08), 1.06 (95% CI, 1.01-1.11), and 1.08 (95% CI, 0.97-1.20) for light (≤1 drink/day), moderate (>1 to <4 drinks/day), and heavy alcohol drinking (≥4 drinks/day), respectively. This comprehensive meta-analysis provided no evidence of a material association between alcohol drinking and prostate cancer, even at high doses.

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November 2011

Matteo Rota · Lorenza Scotti · Federica Turati · Irene Tramacere · Vincenzo Bagnardi

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Supplementary Figure S2

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November 2011

Matteo Rota · Lorenza Scotti · Federica Turati · Irene Tramacere · Vincenzo Bagnardi

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Supplementary Figure S1

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November 2011

Matteo Rota · Lorenza Scotti · Federica Turati · Irene Tramacere · Vincenzo Bagnardi

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Supplementary Table S1

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November 2011

Matteo Rota · Lorenza Scotti · Federica Turati · Irene Tramacere · Vincenzo Bagnardi

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Light Alcohol Drinking and the Risk of Cancer Development: A Controversial Relationship

Article

Jun 2020

Background In accordance with the scientific literature heavy alcohol consumption (>50g per day) represents a risk factor for several diseases development, including cancer. However, the oncogenic role of light alcohol drinking (<12,5g per day) is still unknown. Objective To assess the scientific knowledge about light alcohol consumption and the risk of malignancy onset. Method To collect the scientific evidences regarding this topic the keywords “light alcohol drinking”, “light alcohol consumption” and “cancer”, were used. We decided to analyze papers published during the last 15 years, in order to select the most recent evidence. Meta-analysis with well defined levels of alcohol intake were included in the present review. Other studies that focused on biochemical, molecular and genetic aspects, as well as duplicate articles, were excluded. Results Twenty-nine large meta-analysis were included in this review. Light alcohol drinking was not associated with an increased risk of cancer occurrence, with the exception of breast and prostate cancer and melanoma. Furthermore, a possible protective role of light alcohol assumption consumption on the development of bladder, kidney and ovarian cancer and Non Hodgkin Lymphoma was shown. Conclusion Light alcohol drinking was not associated to the development of several malignancies, except for a light increase of melanoma, breast cancer in women and prostate cancer in men.

Correlation between Oxidative Stress, Nutrition, and Cancer Initiation

Article

Full-text available

Jul 2017
INT J MOL SCI

Inadequate or excessive nutrient consumption leads to oxidative stress, which may disrupt oxidative homeostasis, activate a cascade of molecular pathways, and alter the metabolic status of various tissues. Several foods and consumption patterns have been associated with various cancers and approximately 30–35% of the cancer cases are correlated with overnutrition or malnutrition. However, several contradictory studies are available regarding the association between diet and cancer risk, which remains to be elucidated. Concurrently, oxidative stress is a crucial factor for cancer progression and therapy. Nutritional oxidative stress may be induced by an imbalance between antioxidant defense and pro-oxidant load due to inadequate or excess nutrient supply. Oxidative stress is a physiological state where high levels of reactive oxygen species (ROS) and free radicals are generated. Several signaling pathways associated with carcinogenesis can additionally control ROS generation and regulate ROS downstream mechanisms, which could have potential implications in anticancer research. Cancer initiation may be modulated by the nutrition-mediated elevation in ROS levels, which can stimulate cancer initiation by triggering DNA mutations, damage, and pro-oncogenic signaling. Therefore, in this review, we have provided an overview of the relationship between nutrition, oxidative stress, and cancer initiation, and evaluated the impact of nutrient-mediated regulation of antioxidant capability against cancer therapy.

Is alcohol consumption a risk factor for prostate cancer? A systematic review and meta–analysis

Article

Full-text available

Nov 2016
BMC CANCER

Background Research on a possible causal association between alcohol consumption and risk of prostate cancer is inconclusive. Recent studies on associations between alcohol consumption and other health outcomes suggest these are influenced by drinker misclassification errors and other study quality characteristics. The influence of these factors on estimates of the relationship between alcohol consumption and prostate cancer has not been previously investigated. Methods PubMed and Web of Science searches were made for case–control and cohort studies of alcohol consumption and prostate cancer morbidity and mortality (ICD–10: C61) up to December 2014. Studies were coded for drinker misclassification errors, quality of alcohol measures, extent of control for confounding and other study characteristics. Mixed models were used to estimate relative risk (RR) of morbidity or mortality from prostate cancer due to alcohol consumption with study level controls for selection bias and confounding. Results A total of 340 studies were identified of which 27 satisfied inclusion criteria providing 126 estimates for different alcohol exposures. Adjusted RR estimates indicated a significantly increased risk of prostate cancer among low (RR = 1.08, P < 0.001), medium (RR = 1.07, P < 0.01), high (RR = 1.14, P < 0.001) and higher (RR = 1.18, P < 0.001) volume drinkers compared to abstainers. There was a significant dose–response relationship for current drinkers (Ptrend < 0.01). Studies free from misclassification errors produced the highest risk estimates for drinkers versus abstainers in adjusted models (RR = 1.22, P < 0.05). Conclusion Our study finds, for the first time, a significant dose–response relationship between level of alcohol intake and risk of prostate cancer starting with low volume consumption (>1.3, <24 g per day). This relationship is stronger in the relatively few studies free of former drinker misclassification error. Given the high prevalence of prostate cancer in the developed world, the public health implications of these findings are significant. Prostate cancer may need to be incorporated into future estimates of the burden of disease alongside other cancers (e.g. breast, oesophagus, colon, liver) and be integrated into public health strategies for reducing alcohol related disease. Electronic supplementary material The online version of this article (doi:10.1186/s12885-016-2891-z) contains supplementary material, which is available to authorized users.

Dietary Carcinogens and DNA Adducts in Prostate Cancer

Chapter

Jan 2019
ADV EXP MED BIOL

Prostate cancer (PC) is the most commonly diagnosed non-cutaneous cancer and the second leading cause of cancer-related to death in men. The major risk factors for PC are age, family history, and African American ethnicity. Epidemiological studies have reported large geographical variations in PC incidence and mortality, and thus lifestyle and dietary factors influence PC risk. High fat diet, dairy products, alcohol and red meats, are considered as risk factors for PC. This book chapter provides a comprehensive, literature-based review on dietary factors and their molecular mechanisms of prostate carcinogenesis. A large portion of our knowledge is based on epidemiological studies where dietary factors such as cancer promoting agents, including high-fat, dairy products, alcohol, and cancer-initiating genotoxicants formed in cooked meats have been evaluated for PC risk. However, the precise mechanisms in the etiology of PC development remain uncertain. Additional animal and human cell-based studies are required to further our understandings of risk factors involved in PC etiology. Specific biomarkers of chemical exposures and DNA damage in the prostate can provide evidence of cancer-causing agents in the prostate. Collectively, these studies can improve public health research, nutritional education and chemoprevention strategies.

Una mirada global y actualizada del cáncer de próstata

Article

Full-text available

Jul 2018

Introducción. El cáncer de próstata es una patología importante en la salud pública y tiene alto impacto mundial. El conocimiento y manejo de esta enfermedad debe ser del dominio de todo médico general y especialista que tenga a cargo pacientes que la padezcan. Objetivo. Obtener una visión actualizada de la epidemiología, los factores de riesgo, la clasificación, el diagnóstico y el tratamiento del cáncer de próstata. Materiales y métodos. Se realizó una búsqueda en las bases de datos Embase y MEDLINE desde enero del 2000 hasta marzo del 2017 mediante la cual se hizo un recorrido a través de las condiciones de riesgo, tamizaje, diagnóstico, nuevos biomarcadores y tratamiento del cáncer de próstata. Resultados. Factores genéticos y medioambientales son foco de estudio en la actualidad. La sospecha diagnóstica del cáncer de próstata sigue siendo con el antígeno específico prostético y el tacto rectal y su diagnóstico se debe hacer con la biopsia de próstata. Se han hecho cambios importantes en cuanto a la clasificación y tratamiento de los pacientes con esta enfermedad. Conclusión. Existe mucha investigación en curso y por venir sobre la prevención, el diagnóstico y el tratamiento de esta condición tan importante, relevante y pertinente para los hombres alrededor del mundo.

Pattern, Clinical Characteristics, and Impact of Family History on Prostate-Specific Antigen in Prostate Cancer: A Multicenter Study

Article

Full-text available

Jul 2024
AM J MENS HEALTH

Prostate cancer (PCa) is a major cause of illness and death in men of Sub-Sahara African origin. The study assessed the pattern of PCa, the effect of family history on PSA at diagnosis, and clinical characteristics of PCa in Nigeria. A cross-sectional survey of 200 participants was performed within a 12-month period in Nigeria. Data were collected through patients’ interview and hospital records and analyzed using SPSS version 25. Descriptive and inferential statistics were performed. P values <.05 were significant. Mean age of 68.5 years was observed among the 200 study participants. Only 64 (32.0%) had a positive immediate family history of PCa, and 61 (30.5%) were not aware of their family cancer history. Most patients 140 (70.0%) had lower urinary tract symptom (LUTS)/lower back pain/leg pain, and the average Gleason score was 7.55 (±0.876). Symptoms of LUTS/lower back pain mostly occurred in patients between 58 and 79 years, while LUTS/leg pain was more common in persons between 60 and 84. Average PSA differed among participants; persons with no family cancer history (M = 143.989; 95% confidence interval [CI] = 114.849–173.129), family history of PCa (M = 165.463; 95% CI = 131.435), family history of cervical cancer (M = 133.456; 95% CI = 49.335–217.576), and persons with no knowledge of their family cancer history (M = 121.546; 95% CI = 89.234–153.857). Univariate one-way (F-Tests) showed that family history of cancer had no significant impact on patients’ PSA (R² = 0.017; adjusted R² = 0.002; df = 3; F = 1.154; p = .329) at diagnosis. PCa mostly occurred in men within 60 to 70 years of age, and family history of cancer did not predict PSA at diagnosis. Patients presented to health facilities at advanced or metastatic stages. These findings highlight the need for policies and strategies that encourage early PCa screening.

Cigarette Smoking, Alcohol Consumption, and the Risk of Prostate Cancer-A Retrospective Analysis of Prostate Cancer Patients in Southern Nigeria

Article

Full-text available

May 2022

Background Tobacco contains harmful carcinogens that have been associated with cancers. Some studies have associated tobacco smoking with prostate cancer (PCa). The relationship between alcohol consumption as a risk factor for prostate cancer has been debated. Some studies associated alcohol consumption with increased risk of PCa, associating alcohol consumption with higher-grade cancers and poorer prognosis. Other studies have found a minimal relationship with PCa, with some even suggesting that alcohol consumption may even be protective. This study evaluates the association between smoking and alcohol consumption in prostate cancer patients. Methodology This is a retrospective study on one hundred and fifty-two patients diagnosed with prostate cancer with a known history of both smoking and or alcohol consumption managed over a 9year period from January 2012 to December 2020 from three Urology referrals hospitals. Patients with incomplete history were excluded. Their data such as age, a history of cigarette smoking, prostate-specific antigen level, prostate biopsy histopathology reports, and Gleason’s grade were extracted. This was coded into Microsoft Excel and analyzed with SPSS version 20. The results were analyzed and presented in tables and charts. Results One hundred and thirty-five patients had a premorbid history of smoking and alcohol consumption with a mean age of 69 years and a modal age in the 70–79-year age group. Fifty-three (39.3%) of the patients had a history of cigarette smoking, ninety-four (69.6%) had a history of alcohol consumption. In comparison, fifty-one (37.8%) had a history of cigarette smoking and alcohol consumption. The high-risk Gleason's 8-10 prostate cancer was commoner among smokers than nonsmokers. There was no statistically significant association between cigarette smoking and alcohol consumption alone and combined with PCa. Conclusion The high-risk Gleason's 8-10 prostate cancer was commoner among smokers than nonsmokers. There was no statistically significant association between cigarette smoking and alcohol consumption and the risk of prostate cancer.

Healthy Lifestyle and Cancer Risk: Modifiable Risk Factors to Prevent Cancer

Article

Full-text available

Mar 2024

Citation: Marino, P.; Mininni, M.; Deiana, G.; Marino, G.; Divella, R.; Bochicchio, I.; Giuliano, A.; Lapadula, S.; Lettini, A.R.; Sanseverino, F. Abstract: Cancer has become a serious problem worldwide, as it represents the main cause of death, and its incidence has increased over the years. A potential strategy to counter the growing spread of various forms of cancer is the adoption of prevention strategies, in particular, the use of healthy lifestyles, such as maintaining a healthy weight, following a healthy diet; being physically active; avoiding smoking, alcohol consumption, and sun exposure; and vitamin D supplementation. These modifiable risk factors are associated with this disease, contributing to its development, progression, and severity. This review evaluates the relationship between potentially modifiable risk factors and overall cancer development, specifically breast, colorectal, and prostate cancer, and highlights updated recommendations on cancer prevention. The results of numerous clinical and epidemiological studies clearly show the influence of lifestyles on the development and prevention of cancer. An incorrect diet, composed mainly of saturated fats and processed products, resulting in increased body weight, combined with physical inactivity, alcohol consumption, and smoking, has induced an increase in the incidence of all three types of cancer under study. Given the importance of adopting correct and healthy lifestyles to prevent cancer, global institutions should develop strategies and environments that encourage individuals to adopt healthy and regular behaviors.

Alcohol consumption and its association with long-term prognosis among cardiovascular disease patients

Thesis

Apr 2022

Chengyi Ding

Moderate alcohol consumption has been reported to be cardio-protective among apparently healthy individuals, but it remains unclear if this association is also present in those with cardiovascular disease (CVD). Inconsistency exists across guidelines regarding the recommended drinking limits for CVD patients. This thesis consists of three studies aiming to better understand alcohol consumption in this patient population and its association with long-term prognosis. By pooling the results from de novo analyses of three cohorts and 12 published studies identified through a systematic review, meta-analyses of 48423 CVD patients (Study 1) found lower risk of mortality and subsequent cardiovascular events for an alcohol consumption up to 105 grams per week compared to current non-drinking. These effects, however, were significantly attenuated or absent after distinguishing former drinkers from non-drinkers. Meanwhile, little is known about the longitudinal dynamics of alcohol consumption in CVD patients and the associated health risks. With repeated-measures data from two cohorts (n=12502), Study 2 plotted CVD patients’ mean trajectory of weekly alcohol consumption as a function of time, centred on the date of diagnosis and spanning up to 30 years before and after the diagnosis. For male patients, mean consumption increased over time, peaked at eight years before diagnosis at 95 grams per week, and declined afterwards. A flatter trajectory was seen in female patients, which remained stable at around 30 grams per week and started to decline after diagnosis. In Study 3, alcohol consumption trajectory was further differentiated into six distinct groups in an inception cohort of 1306 patients with incident CVD and related to their subsequent mortality risk from all causes. Patients who consistently drank moderately (within 112 grams per week) had a similar risk of mortality as those who were continuous non-drinkers. While increases in risk were found among patients who stopped drinking compared to continuous moderate drinkers, former drinkers also had the worst self-rated health. Temporal variability in alcohol consumption highlights the importance of taking a longitudinal approach to examine alcohol health relations. Findings indicating protective effects of baseline moderate drinking in CVD patients may be largely explained by a referent group contaminated by less healthy former drinkers and are not seen when considering long-term drinking trajectories. This thesis provides novel knowledge about alcohol’s relation to cardiovascular health, which could be used to inform CVD patient care and low-risk drinking guidelines.

The Impact of Lifestyle on Prostate Cancer: A Road to the Discovery of New Biomarkers

Article

Full-text available

May 2022

Prostate cancer (PCa) is one of the most common cancers among men, and its incidence has been rising through the years. Several risk factors have been associated with this disease and unhealthy lifestyles and inflammation were appointed as major contributors for PCa development, progression, and severity. Despite the advantages associated with the currently used diagnostic tools [prostate-specific antigen(PSA) serum levels and digital rectal examination (DRE)], the development of effective approaches for PCa diagnosis is still necessary. Finding lifestyle-associated proteins that may predict the development of PCa seems to be a promising strategy to improve PCa diagnosis. In this context, several biomarkers have been identified, including circulating biomarkers (CRP, insulin, C-peptide, TNFα-R2, adiponectin, IL-6, total PSA, free PSA, and p2PSA), urine biomarkers (PCA3, guanidine, phenylacetylglycine, and glycine), proteins expressed in exosomes (afamin, vitamin D-binding protein, and filamin A), and miRNAs expressed in prostate tissue (miRNA-21, miRNA-101, and miRNA-182). In conclusion, exploring the impact of lifestyle and inflammation on PCa development and progression may open doors to the identification of new biomarkers. The discovery of new PCa diagnostic biomarkers should contribute to reduce overdiagnosis and overtreatment.

Global Development on Causes, Epidemiology, Aetiology, and Risk Factors of Prostate Cancer: An Advanced Study

Chapter

Full-text available

Jul 2021

Alcohol consumption and incidence of prostate cancer among Chinese people: A systematic review and meta-analysis

Article

Oct 2020

Aims: Meta-analyses have suggested a dose-response relationship between level of alcohol use and risk of prostate cancer, but the populations in the included studies are predominantly Caucasian. Many Chinese language studies have not been included in published reviews and/or meta-analyses. The present meta–analysis accessed research reports in both English and Chinese language sources in order to investigate this relationship specifically among Chinese people. Methods: Searches in five large Chinese biomedical bibliographic databases were made for case–control and cohort studies of alcohol consumption and prostate cancer incidence and death (ICD–10: C61) up to May 2017. Studies were coded for design, outcome, drinker and non-drinkers, extent of control for confounding and other study characteristics. Mixed models were used to estimate relative risk (RR) of incidence or death from prostate cancer due to alcohol consumption with study level controls for designs, drinker bias and types of drinkers. Findings: A total of 415 studies were identified of which 25 (20 in Chinese from five Chinese databases and 5 in English from published meta-analyses) satisfied inclusion criteria providing 36 risk estimates of prostate cancer for drinkers versus non-drinkers. There was a total of 36 OR estimates; 27 using patients as controls and 9 using healthy people. Nine studies (14 OR estimates) specified reference abstainers as “never drank” or “no drinking”. Adjusted RR estimates indicated a significantly increased risk of prostate cancer among drinkers (RR=1.46, 95% CI: 1.40 – 1.52, t-test P<0.001) compared to non-drinkers. Dose-response relationships (t-test P<0.001) were evident in three studies that assessed level of alcohol intake. Conclusions: There is a significantly higher risk of prostate cancer incidence among Chinese drinkers than non-drinkers, with some evidence of a dose-response relationship. However, almost all the identified studies suffered from former and/or occasional drinker biases. Few studies had adequate measures of level of alcohol intake and further well-designed studies are required.

Effects of alcohol consumption in general, and wine in particular, on the risk of cancer development: A review

Article

Full-text available

Oct 2020

Since 1988, alcohol has been classified as a Group 1 carcinogen, the highest level of risk, by the International Agency for Research on Cancer (IARC). In fact, alcohol consumption is the third leading risk factor for disease and mortality in Europe. It accounts for 4.65 % of the global burden of both injury and disease, making it one of the most preventable causes of injury and death. Tissues in closest contact with alcohol when it is ingested, such as those of the oral cavity, pharynx, esophagus and larynx, have at greater risk of becoming cancerous than other body tissues. The consumption of alcohol is also associated with an increased risk of stomach, colon, rectum, liver, female breast and ovarian cancers. Conversely, recent studies suggest that red wine components inhibit colony formation of human breast cancer and esophageal carcinoma cells, suggesting that wine-derived phenolic compounds may be inhibitory, in contrast to the alcohol component of wine. Because of a lack of systematic studies dealing with the different types of cancer and alcoholic beverages and wine in particular, in this narrative review we summarize the general risk of cancer linked to the consumption of alcoholic beverages, including wine, according to type of cancer, with 140 extracted relevant references from 1966 to 2020. Mostly epidemiological studies concerning large cohorts have been selected. For the cancers of the upper aerodigestive tract, liver, colorectum, breast cancer, pancreatic, prostate, an excessive consumption and/or misuse of alcoholic beverages is correlated with increased risk. Conversely a probable decreased risk has been found for renal/kidney cancers, as well as for Non-Hodgkin lymphomas, such as thyroid lymphomas, associated with the moderate consumption of alcoholic beverages. There is no evidence of ovarian, gastric, head and neck, and lung cancer being linked to the moderate consumption of alcoholic beverages. Cancer is a multifactorial disease, and many factors contribute to effects on health status, usually being both genetic and environmental. Habits (smoking, dietary/lifestyle pattern/ habits, physical activity), should also be taken into account when defining appropriate consumption frequencies for different types of alcoholic drink (wine, beer, spirits). Further research is needed related to wine consumption in the context of a healthy dietary and lifestyle pattern given health-promoting constituents of wine and its effects on cancer incidence. k e y w o r d alcoholic beverage beverage, wine, cancer risk/risk of cancer, consumption

Prostate cancer management: long-term beliefs, epidemic developments in the early twenty-first century and 3PM dimensional solutions

Article

Full-text available

Jun 2020

In the early twenty-first century, societies around the world are facing the paradoxal epidemic development of PCa as a non-communicable disease. PCa is the most frequently diagnosed cancer for men in several countries such as the USA. Permanently improving diagnostics and treatments in the PCa management causes an impressive divergence between, on one hand, permanently increasing numbers of diagnosed PCa cases and, on the other hand, stable or even slightly decreasing mortality rates. Still, aspects listed below are waiting for innovate solutions in the context of predictive approaches, targeted prevention and personalisation of medical care (PPPM / 3PM). A. PCa belongs to the cancer types with the highest incidence worldwide. Corresponding economic burden is enormous. Moreover, the costs of treating PCa are currently increasing more quickly than those of any other cancer. Implementing individualised patient profiles and adapted treatment algorithms would make currently too heterogeneous landscape of PCa treatment costs more transparent providing clear “road map” for the cost saving. B. PCa is a systemic multi-factorial disease. Consequently, predictive diagnostics by liquid biopsy analysis is instrumental for the disease prediction, targeted prevention and curative treatments at early stages. C. The incidence of metastasising PCa is rapidly increasing particularly in younger populations. Exemplified by trends observed in the USA, prognosis is that the annual burden will increase by over 40% in 2025. To this end, one of the evident deficits is the reactive character of medical services currently provided to populations. Innovative screening programmes might be useful to identify persons in suboptimal health conditions before the clinical onset of metastasising PCa. Strong predisposition to systemic hypoxic conditions and ischemic lesions (e.g. characteristic for individuals with Flammer syndrome phenotype) and low-grade inflammation might be indicative for specific phenotyping and genotyping in metastasising PCa screening and disease management. Predictive liquid biopsy tests for CTC enumeration and their molecular characterisation are considered to be useful for secondary prevention of metastatic disease in PCa patients. D. Particular rapidly increasing PCa incidence rates are characteristic for adolescents and young adults aged 15–40 years. Patients with early onset prostate cancer pose unique challenges; multi-factorial risks for these trends are proposed. Consequently, multi-level diagnostics including phenotyping and multi-omics are considered to be the most appropriate tool for the risk assessment, prediction and prognosis. Accumulating evidence suggests that early onset prostate cancer is a distinct phenotype from both aetiological and clinical perspectives deserving particular attention from view point of 3P medical approaches.

Alcohol consumption and Types of Cancer: A Review

Article

Full-text available

Oct 2019

Objective: The purpose of this review study was to investigate the association between alcohol consumption and common cancers. Methods: This study was conducted in English by February 2019 to include studies reporting alcohol consumption related cancer risks through a search in data bases of the PubMed, Scopus and Web of Science. The search strategy included the keywords: "cancer", " alcohol consumption or Alcohol Drinking or Underage Drinking ". Articles that looked at the relationship between each type of cancer and consumption of alcoholic beverages were entered in to the study and summarized in review. Results: alcohol consumption is associated with a decreased risk of some types of cancers including: Renal cell carcinoma and Non-Hodgkin lymphoma. Also, alcohol is independent risk factor for oral and pharyngeal, laryngeal, Esophagus, Stomach, Colorectal, Breast and Liver cancer. However, further studies are required to confirm the association between alcohol consumption and Pancreas, Lung, Prostate, Endometrium, Brain tumour and Bladder cancer risks. Conclusions: Given the role of excessive alcohol consumption in the occurrence of various types of cancers, there is a need for a comprehensive plan for alcohol abuse in the community Keywords: cancer, alcohol consumption, Underage Drinking, Alcohol Drinking

Critical Review of Alcohol, Alcoholism and the Withdrawal Symptoms. II. Treatment Strategies

Article

Full-text available

Apr 2017

K Singh Ashok

Risk factors for prostate cancer in West African Men: The Familial Cohort Study

Article

Full-text available

May 2019

Prostate cancer (CaP) has been identified as the most common cancer among men globally with higher prevalence, incidence and mortality rates in Black men. This study aims to assess the risk factors for CaP among West African men residing in Nigeria, Cameroon and the United States. A validated Prostate Cancer Transatlantic Consortium (CaPTC) familial cohort study questionnaire was used to collect data on the respondents’ characteristics, alcohol consumption pattern, smoking pattern, knowledge of CaP, physical activity level and cancer status. Anthropometric measurements were taken using standard procedures. Data was summarised using descriptive statistics and penalized maximum likelihood logistic regression analysis via Firth method to determine the association between CaP status and independent variables. The results show that 2.21% of the respondents reported to have been diagnosed with CaP. The median age of the respondents was 47 years with 62.21% having poor knowledge of CaP, and 17.11% with central obesity. More than half (62.07%) of the respondents currently drink alcohol, 24.4% are current smokers and 51.5% engage in low physical activity. Number of daughters (OR=1.2435, 95%CI: 1.0045, 1.5393), consistent alcohol drinkers in years (OR=1.0484, 95%CI: 1.0151, 1.0829) and glasses of drink on a typical occasion (OR=1.2145, 95%CI: 1.0560, 1.3968) were associated with CaP status. In the multiple logistic regression, only number of daughters (OR=1.2531, 95%CI: 1.0055, 1.5617) was associated with CaP status. In conclusion, poor knowledge of CaP was observed among the respondents. Alcohol consumption, increased number of glasses of alcohol consumed on typical occasion and increasing number of daughters were associated with CaP status and increased risk of the disease.

Epidemiology of Prostate Cancer

Article

Full-text available

Apr 2019

Prashanth Rawla

Prostate cancer is the second most frequent cancer diagnosis made in men and the fifth leading cause of death worldwide. Prostate cancer may be asymptomatic at the early stage and often has an indolent course that may require only active surveillance. Based on GLOBOCAN 2018 estimates, 1,276,106 new cases of prostate cancer were reported worldwide in 2018, with higher prevalence in the developed countries. Differences in the incidence rates worldwide reflect differences in the use of diagnostic testing. Prostate cancer incidence and mortality rates are strongly related to the age with the highest incidence being seen in elderly men (> 65 years of age). African-American men have the highest incidence rates and more aggressive type of prostate cancer compared to White men. There is no evidence yet on how to prevent prostate cancer; however, it is possible to lower the risk by limiting high-fat foods, increasing the intake of vegetables and fruits and performing more exercise. Screening is highly recommended at age 45 for men with familial history and African-American men. Up-to-date statistics on prostate cancer occurrence and outcomes along with a better understanding of the etiology and causative risk factors are essential for the primary prevention of this disease.

Total nut, tree nut, peanut, and peanut butter intake and the risk of prostate cancer in the Netherlands Cohort Study

Article

Full-text available

Sep 2019
PROSTATE CANCER P D

Background: The consumption of nuts has been associated with a reduction of cancer risk, but only a few studies have examined the effects of nuts on prostate cancer risk. The current study prospectively investigated the association between the consumption of total nuts, tree nuts, peanuts, and peanut butter and the risk of total, advanced, and non-advanced prostate cancer. Methods: The association between nuts and prostate cancer was evaluated in the Netherlands Cohort Study, which was conducted among 58,279 men aged 55-69 year at baseline. A case-cohort approach was used for data processing and analyses. After 20.3 years of follow-up, 3868 incident prostate cancer cases and 1979 subcohort members were available for multivariable Cox regression analyses. Results: For total, advanced, and non-advanced prostate cancer, no significant associations were found for total nuts (total prostate cancer: hazard ratio (HR) (95%CI) for 10+ g/day vs. non-consumers = 1.09 (0.92-1.29), Ptrend = 0.409). No significant associations were observed for tree nuts and peanuts for total, advanced, and non-advanced prostate cancer risk. Peanut butter consumption was associated with a significantly increased risk of non-advanced prostate cancer (HR (95%CI) for 5+ g/day vs. non-consumers = 1.33 (1.08-1.63), Ptrend = 0.008), but not with total or advanced prostate cancer. Conclusions: No significant associations were found between total nut, tree nut, and peanut consumption and total, advanced, and non-advanced prostate cancer. Peanut butter might be associated with an increased non-advanced prostate cancer risk.

Behavioural Risk Factors Associated With Prostate Cancer: The Prostate Cancer Transatlantic Consortium (CaPTC) Cohort Study

Article

Full-text available

Oct 2018

Background: Studies have linked genetic susceptibility to prostate cancer (CaP) to African heritage and familial disease. Also, lifestyle factors, general and central obesity have been identified as risk factors for CaP. Aim: To assess the behavioral risk factors associated with CaP among West-African men and US West African immigrants. Methods: The cross-sectional study was conducted among 480 respondents recruited from Nigeria, Cameroon and the United States. The CaPTC Familial Project study instrument was used to collect data on the background information of respondents, country specific residence information, physical activity level, smoking and alcohol consumption pattern, family and personal history of cancer and other types of cancers and knowledge of CaP. Anthropometric measurements were taken. Data were analyzed using SPSS version 20. Results: Majority (85.6%) were recruited from Nigeria, 5.5% from Cameroon and 8.9% from the USA and the mean age is 48.2±9.9. About three quarters (74.4%) have been married only once while 10.8% have been married for about 2-5 times. Few (3.3%) of the respondent's wives had cancer and 0.2% had cervical cancer. Less than 1% of respondent's daughters had cancer, 4.6% of their uncles had cancer. Among the respondent's full brothers and sisters, 0.4% had cancer and 1.5% of their birth mothers had cancer. Also a few (2.3%) of respondent's fathers had cancer and 11.9% of their paternal grandparents had one type of cancer. About 17.2% of respondents have been diagnosed of a prostate condition and 5.9% were diagnosed of CaP with 47.1% of those with CaP are from Nigeria, 49.6% from the USA and 3.3% from Cameroon. One-quarter (25.6%) have smoked at least once in their lifetime, 2.5% smoke daily and the mean age at which smoking commenced is 26.6±19.4. More than half (55.4%) had consumed alcohol at least once in their lifetime and the mean age at which alcohol consumption started is 9.9±11.9. Only 9.8% had adequate knowledge about CaP and 61.0% poor knowledge. About a quarter (25.5%) were obese with 3.3% being morbidly obese. One-third (32.3%) are involved in moderate physical activity and 17.9% in rigorous physical activity. No significant difference ( P = 0.492) was observed in the physical activity level from the different locations. However, a significant relationship was observed between alcohol consumption, smoking, body mass index and country of residence ( P = 0.001, 0.035 and 0.001 respectively). Cigarette smoking and alcohol consumption (frequency and quantity) was significantly higher among respondents from the USA. Obesity was also significantly higher among the respondents from Nigeria and the USA. Although not statistically significant, family history of cancer was more among respondents from Nigeria and the USA. Conclusion: Obesity, smoking, alcohol consumption seems to be a common practice among respondents from Nigeria and USA.

Gender Differences in Binge Drinking

Article

Full-text available

Jan 2018

Just as binge drinking rates differ for men and women, the predictors and consequences of binge drinking vary by gender as well. This article examines these differences and how binge drinking definitions and research samples and methods may influence findings. It also describes the relationship between age and binge drinking among men and women, and how drinking culture and environment affect this relationship. It examines gender-specific trends in binge drinking, predictors of binge drinking for men and women, and binge drinking in the context of smoking. The article reviews current findings on gender differences in the health consequences of binge drinking, including morbidity and mortality, suicidality, cancer, cardiovascular disorders, liver disorders, and brain and neurocognitive implications. It also discusses gender differences in the behavioral and social consequences of binge drinking, including alcohol-impaired driving, sexual assault, and intimate partner violence, and includes implications for treatment and prevention.

Early-Life Alcohol Intake and High-Grade Prostate Cancer: Results from an Equal-Access, Racially Diverse Biopsy Cohort

Article

Aug 2018

Epidemiologic evidence for an association between alcohol and prostate cancer is mixed. Moreover, there is a lack of research investigating early-life alcohol intake as a risk factor for either overall or high-grade prostate cancer. We examined lifetime alcohol intake in association with prostate cancer diagnosis in an equal-access, racially diverse prostate biopsy cohort. Men undergoing prostate biopsy at the Durham Veterans Affairs Medical Center from 2007 to 2018 completed a survey indicating average number of alcoholic beverages consumed per week [categorized as none (ref), 1-6, ≥7] during each decade of life. Multivariable logistic regression was used to test the association between alcohol intake across decades and diagnosis of overall, low-grade [grade group (GG) 1-2] and high-grade prostate cancer (GG 3-5). Of 650 men ages 49-89 who underwent biopsy, 325 were diagnosed with prostate cancer, 238 with low-grade and 88 with high-grade disease. Relative to nondrinkers, men who consumed ≥7 drinks/week at ages 15 to 19 had increased odds of high-grade prostate cancer diagnosis (OR = 3.21, Ptrend = 0.020), with similar findings for ages 20 to 29, 30 to 39, and 40 to 49. Consistent with these results, men in the upper tertile of cumulative lifetime intake had increased odds of high-grade prostate cancer diagnosis (OR = 3.20, Ptrend = 0.003). In contrast, current alcohol intake was not associated with prostate cancer. In conclusion, among men undergoing prostate biopsy, heavier alcohol intake earlier in life and higher cumulative lifetime intake were positively associated with high-grade prostate cancer diagnosis, while current intake was unrelated to prostate cancer. Our findings suggest that earlier-life alcohol intake should be explored as a potential risk factor for high-grade prostate cancer. Cancer Prev Res; 1-8. ©2018 AACR.

Gender differences in binge drinking prevalence, predictors, and consequences

Article

Full-text available

Jan 2017

Pattern of prostate cancer among a Nigerian population: A study in a single tertiary care centre

Article

Jan 2016
Niger J Med

Background: Prostate cancer has become a global health challenge because of its rising morbidity and mortality in males. It is the second cause of cancer death following lung cancer in men. It is rare under the age of 40 and its incidence has been shown to increase exponentially with age. Previously, Prostate cancer was thought to be a disease rare in blacks owing to the fact that not so much was known of the disease. Aims and objectives: The objective of the study was to review the prevalence, pattern of presentation and clinic-pathologic findings of prostate cancer in the Department of Radiotherapy, Lagos University Teaching Hospital (LUTH), between January 2001 to December 2010 in comparison to previous and recent studies globally. Methodology: Data collection for all patients histologically diagnosed with Prostate cancer at the Department of Radiotherapy, LUTH, from 1st of January 2001 to 31st of December 2010 was done. Results: A total of 144 cases with histologically confirmed Prostate cancer seen during the ten year study were analysed. The highest frequency was seen in the year 2010 with 34 cases. The age range was 41 to 81years with a mean of 66.19 ±7.30years.Adenocarcinoma was the commonest histological type with 98.6%.9(6.3%) patients had a positive family history of prostate cancer out of which 3(33.3%) had their brother affected the malignancy. 51(35.4%) patients presented with stage IV disease.18(12.5%) patients had a Gleason's score of 6,10(6.9%) patients had a Gleason's score of 7 and 2(1.4%) patients had a Gleason's score of 10. The most common presenting complaints were bone pains seen in 51(35.4%) patients, frequent night urine and difficulty with micturition seen in 50(34.7%) and 42(29.2%) patients respectively. Conclusion: This study showed that prostate cancer is not as rare as it used to be. Reasons attributed to its rarity then were lack of awareness, poor screening facilities and poor diagnosing technique.

Smoking and prostate cancer: A life course analysis

Article

Full-text available

Feb 2018
BMC CANCER

Background: Inconsistent associations between smoking status and prostate cancer (PC) could be due to exposure assessment error. Reconstructing smoking behaviors over the life course could reduce exposure assessment error. Methods: As part of a case-control study, we identified 402 incident and histologically confirmed PC cases that were matched by age (±5 years) to 805 population controls. Through direct interview, we obtained information about: age at smoking onset, intensity and frequency of cigarette smoking at different life stages, and smoking cessation age. Smoking status at interview and average smoking index over the lifetime (packs/year) were estimated. Life course smoking patterns were obtained applying the k-means+ method for longitudinal data to the smoking index (pack/year) for each life stage. Results: Two life-course smoking patterns were identified among ever smokers: "pattern A" characterized by males who reported low and constant smoking intensity (87.8%), and "pattern B" (12.2%) males with an initial period of low intensity, followed by an increase during the second period. Compared to never smokers, pattern B was associated with higher poorly differentiated PC, (OR 2.30; 95% CI 1.21-4.38). No association was observed with average smoking index. Conclusion: Life course smoking patterns seem to capture the smoking variability during life course and reduce the likelihood of reverse causation. Using this assessment strategy our findings support the potential role of tobacco smoking in PC, particularly poorly differentiated PC. Prospective studies with comprehensive smoking history during the lifetime are needed to confirm these findings.

Diet and Other Lifestyle Factors Associated with Prostate Cancer Differ Between the German and Italian Region of Switzerland

Article

Dec 2017

Purpose: In Switzerland, prostate cancer mortality is higher in the German than in the Italian-speaking region. We aimed at exploring the association of living in one of the two regions with lifestyle factors presumably lowering the risk of prostate cancer. Methods: We pooled data from the Swiss Health Survey, conducted every 5 years 1992 - 2012. Information on diet (meat, fish, dairy, fruits and vegetables), alcohol, smoking, physical activity and body mass index were dichotomized into "risky" and "risk-reducing" lifestyle behaviour with respect to prostate cancer. Multivariable logistic regression analyses were performed to assess associations between the German and Italian region of Switzerland and each single lifestyle factor. Results: Living in the Italian region was associated with "risk-reducing" diet, i.e. with a higher prevalence of low dairy products and meat consumption and high fish consumption (odds ratio [OR] 1.34, 95% confidence interval [CI] 1.21 - 1.48; OR 3.31, 95% CI 2.94 - 3.72; OR 1.90, 95% CI 1.71 - 2.12, respectively). However, men in the Italian region were less likely to have low alcohol consumption and regular physical activity than men in the German region (OR 0.43, 95% CI 0.36 - 0.52 and OR 0.77, 95% CI 0.69 - 0.86, respectively). Conclusions: Prostate cancer risk-reducing dietary behaviour (i.e., less dairy products, less meat and more fish) was more common in the Italian region, whereas other risk-reducing lifestyle behaviours were more common in the German region.

Risks and Forms of Cancer Associated with Alcohol Consumption

Article

Full-text available

Dec 2014

Rodolfo do Couto Maia

Total and beverage-specific alcohol intake and the risk of aggressive prostate cancer: a case–control study

Article

Apr 2017

Background: Ethanol in alcoholic beverages is a known carcinogen, but its association with aggressive prostate cancer (APC) is uncertain. Recent studies have shown a modest increase in risk of APC associated with heavy alcohol intake while association for beverage types remain inconsistent. Methods: Using a case-control design and self-administered questionnaire, we examined the association between APC (high grade and/or advanced stage) and frequency and quantity of alcohol intake 2 years prior to enrolment. Furthermore, we delineated the relationships for beverage-specific intakes of beer, red wine, white wine and spirits. Results: The study included 1282 APC cases and 951 controls. Beer intake frequency of ⩾5 days per week was associated with increased risk compared with no beer intake (odds ratio=1.66, 95% confidence interval: 1.12-2.48) whereas wine was protective at all frequencies of consumption compared with those with no wine intake. For every 10 g per week ethanol intake from beer increase, the odds of advanced PC rose by 3% (OR=1.03, 95% CI: 1.02-1.05). No such increased risk was observed for red or white wine while a marginal dose-response relationship was found for spirits (OR=1.03, 95% CI: 0.99-1.07). Conclusions: Heavy beer and possibly spirits consumption is associated with increased risk while no dose-response relationship was found for red or white wine. Wine drinkers at all frequencies have a decreased risk of APC compared with those who did not drink wine.Prostate Cancer and Prostatic Diseases advance online publication, 18 April 2017; doi:10.1038/pcan.2017.12.

The Risk Factors of Prostate Cancer and Its Prevention: A Literature Review

Article

Jul 2016

This is a literature review study. Data was obtained from several literature reviews and journal resources that have correlation with the risk factors involved in PCa including age, ethnicity, family history, insulin-Like growth factor, sexually transmitted disease, obesity, smoking, alcohol consumption, vasectomy, and diet, and the prevention of PCa including soy, lycopene, green tea, supplementation, and exercise.Numerous epidemiologic studies have linked PCa risk to various factors, i.e. age, ethnicity, family history, insulin like-growth factors, lifestyle, diet, environmental and occupational exposures. The results of epidemiological, In vivo, in vitro, and early clinical studies suggested that selected dietary products and supplementation may play a role in PCa prevention. More studies are still needed to explore and find the risk factors and preventive methods of PCa development. It is important for clinician to ellaborate these informations for education to lower PCa risks and prevent PCa.

Alcohol consumption and its association with cancer, cardiovascular, liver and brain diseases: a systematic review of Mendelian randomization studies

Article

Full-text available

Nov 2024

Background The health effects of alcohol consumption, particularly regarding potential protective benefits of light to moderate intake compared to abstinence, remain a subject of ongoing debate. However, epidemiological studies face limitations due to imprecise exposure measurements and the potential for bias through residual confounding and reverse causation. To address these limitations, we conducted a systematic review of Mendelian Randomization (MR) studies examining the causal relationship between alcohol consumption and cancers, cardiovascular, liver, and neurological diseases. Methodology We searched PubMed, ScienceDirect and Embase and Europe PMC up to 05/2024 for MR studies investigating the association of genetically predicted alcohol consumption with cancers, cardiovascular, liver and neurological diseases. We assessed methodological quality based on key elements of the MR design a genetic association studies tool. Results We included 70 MR studies that matched our inclusion criteria. Our review showed a significant association of alcohol consumption with multiple cancers such as oral and oropharyngeal, esophageal, colorectal cancers, hepatocellular carcinoma and cutaneous melanoma. While the available studies did not consistently confirm the adverse or protective effects of alcohol on other cancers, such as lung cancer, as suggested by observational studies. Additionally, MR studies confirmed a likely causal effect of alcohol on the risk of hypertension, atrial fibrillation, myocardial infraction and vessels disease. However, there was no evidence to support the protective effects of light to moderate alcohol consumption on cognitive function, Alzheimer's disease, and amyotrophic lateral sclerosis, as reported in observational studies while our review revealed an increased risk of epilepsy and multiple sclerosis. The available studies provided limited results on the link between alcohol consumption and liver disease. Conclusions Despite the valuable insights into the causal relationship between alcohol consumption and various health outcomes that MR studies provided, it is worth noting that the inconsistent ability of genetic instrumental variables to distinguish between abstainers, light and moderate drinkers makes it difficult to differentiate between U or J-shaped vs. linear relationships between exposure and outcome. Additional research is necessary to establish formal quality assessment tools for MR studies and to conduct more studies in diverse populations, including non-European ancestries. Systematic Review Registration www.crd.york.ac.uk/prospero/display_record.php?ID=CRD42021246154, Identifier: PROSPERO (CRD42021246154).

To Drink or Not to Drink? Investigating Alcohol’s Impact on Prostate Cancer Risk

Article

Full-text available

Oct 2024

Simple Summary Prostate cancer is one of the most common cancers in men worldwide, and its causes are influenced by both genetic and lifestyle factors. One lifestyle factor that has shown mixed evidence is alcohol consumption. While some studies suggest that heavy drinking increases prostate cancer risk, others show little to no connection. This research aims to clarify the relationship between alcohol consumption and prostate cancer by reviewing and analyzing global studies. By exploring how different types of alcohol and drinking patterns may influence cancer risk, the goal is to provide more precise guidance for healthcare providers and patients. These findings can help inform public health recommendations and future research on cancer prevention strategies, especially for higher-risk populations. Abstract Background/Objectives: Prostate cancer (PCa) is a significant global health issue. The relationship between alcohol consumption and PCa risk has been the subject of extensive research, yet findings remain inconsistent. This review aims to clarify the association between alcohol intake and PCa risk, its aggressiveness, and the potential metabolic pathways involved in PCa onset. Methods: A comprehensive literature search was conducted across multiple databases, including PubMed and MEDLINE, focusing on epidemiological studies, meta-analyses, cohort studies, and case–control studies. Studies evaluating alcohol consumption, prostate-specific antigen (PSA) levels, and PCa risk were included. The review also explored the roles of alcohol dehydrogenase (ADH) and aldehyde dehydrogenase (ALDH) in alcohol metabolism. Results: The analysis reveals a complex relationship between alcohol consumption and PCa. Heavy alcohol intake is associated with an increased risk of PCa, particularly more aggressive forms, and higher mortality rates. However, studies also show weak or no association between moderate alcohol consumption and PCa. The variability in findings may be attributed to differences in alcohol types, regional factors, and study methodologies. Conclusions: The link between alcohol consumption and PCa risk is multifaceted. While heavy drinking appears to increase the risk of aggressive PCa, the overall relationship remains unclear. Further research is needed to better understand these associations and inform public health recommendations and cancer prevention strategies.

Alcohol and Cancer: The Epidemiological Evidence

Chapter

Oct 2023

The consumption of alcohol is one of the top-10 risks contributing to the worldwide burden of disease. In 2012, the Monograph program at the International Agency for Research on Cancer (IARC) reviewed the epidemiological evidence on the possible association between alcoholic beverage consumption and cancer risk at 27 anatomical sites, and reported that cancers of the upper digestive tract (UADT: oral cavity, pharynx, larynx, esophagus squamous cell carcinoma), liver, colorectum, and female breast were causally related to the consumption of alcoholic beverages. In this chapter we review and summarize the most recent scientific evidence on the link between alcohol intake and cancer risk, including cancer sites with a non-established relationship with alcohol. Several candidate mechanisms of alcohol carcinogenesis are presented. An estimate of the global impact of alcohol on cancer burden is provided, using the population attributable fractions, according to a recent IARC study. Some 741,000 new cancer cases, equal to 4.1% of all new cases of cancer, globally in 2020 were estimated to be attributable to alcohol consumption and could have been avoided if there had been no alcohol use. Last, the future perspectives and challenges of the research on alcohol and cancer were comprehensively discussed.

Carriage of mutations R462Q (rs 486907) and D541E (rs 627928) of the RNASEL gene and risk factors in patients with prostate cancer in Burkina Faso

Article

Full-text available

Jun 2022
BMC MED GENOMICS

Background Prostate cancer (Pca) is a public health problem that affects men, usually of middle age or older. It is the second most common cancer diagnosed in men and the fifth leading cause of death. The RNASEL gene located in 1q25 and identified as a susceptibility gene to hereditary prostate cancer, has never been studied in relation to prostate cancer in Burkina Faso. The aim of this study was to analyze the carriage of RNASEL R462Q and D541E mutations and risks factors in patients with prostate cancer in the Burkina Faso. Methods This case–control study included of 38 histologically diagnosed prostate cancer cases and 53 controls (cases without prostate abnormalities). Real-time PCR genotyping of R462Q and D541E variants using the TaqMan® allelic discrimination technique was used. Correlations between different genotypes and combined genotypes were investigated. Results The R462Q variant was present in 5.3% of cases and 7.5% of controls. The D541E variant was present in 50.0% of cases and 35% of controls. There is no association between R462Q variants (OR = 0.60; 95%IC, 0.10–3.51; p = 0.686) and D541E variants (OR = 2.46; 95%IC, 0.78–7.80; p = 0.121) and genotypes combined with prostate cancer. However, there is a statistically significant difference in the distribution of cases according to the PSA rate at diagnosis (p ˂ 0.001). For the Gleason score distribution, only 13.2% of cases have a Gleason score greater than 7. There is a statistically significant difference in the Gleason score distribution of cases (p ˂ 0.001). Conclusions These variants, considered in isolation or in combination, are not associated with the risk of prostate cancer.

Pathological Roles of Reactive Oxygen Species in Male Reproduction

Chapter

Jun 2022
ADV EXP MED BIOL

Reactive oxygen species (ROS) are free radicals that have at least one unpaired electron and play specific roles in the human body. An imbalance of ROS and antioxidant levels gives rise to a condition called oxidative stress. High levels of ROS in the male reproductive tract can interfere with its normal functioning and can even pose as toxic to the sperm, inhibiting sperm functioning (including motility) and metabolism. Oxidative stress resulting from ROS and lipid peroxidation is one of the major causes of male infertility including infertility in varicocele patients. These may cause DNA and peroxidative damage and apoptosis. Production of ROS in excess also leads to erectile dysfunction (ED). In recent years, studies have also linked oxidative stress with the development, progress, and therapy response of prostate cancer patients. The present study summarizes the pathological roles of ROS in male reproductive problems such as infertility, ED, and prostate cancer and also provide an insight into the probable mechanism through which ROS exert their pathological impact.

Análise descritiva do rastreamento do câncer de próstata no contexto assistencial de atuação das Unidades Básicas de Saúde do Distrito Federal / Descriptive analysis of prostate cancer screening in the care context of the Basic Health Units of the Federal District

Article

Feb 2022

O câncer de próstata é a segunda maior causa de mortalidade por câncer em homens no mundo. A maioria dos pacientes com essa comorbidade é assintomática, vindo a apresentar sintomas apenas na doença localmente avançada ou metastática. Diante disto, é questionada a importância do rastreamento para a prevenção secundária. Contudo, não há consenso sobre a efetividade da aplicação destes rastreios na literatura. A Sociedade Brasileira de Urologia (SBU) recomenda o rastreamento de CA de próstata de forma individualizada na população masculina entre 55 e 69 anos. Por outro lado, o Ministério da Saúde (MS) desaconselha esta prática, uma vez que evidências mostram que os danos superam os benefícios, realizando, assim, a prevenção quaternária. Considerando tais divergências, fez-se este estudo com o objetivo de avaliar a aplicabilidade do rastreamento do câncer de próstata realizado pelos médicos da Atenção Primária em Saúde que atuam em Unidades Básicas de Saúde (UBS) do Distrito Federal. Para isto, foi realizado um estudo transversal quantitativo, por meio de um questionário que identificou a preferência dos profissionais, se pela adoção das recomendações da SBU, a favor da triagem, ou do MS, que não recomenda esse rastreio. Foi encontrada uma amostra total de 12 profissionais. Dentre estes, 66,7% afirmaram que realizam o rastreio do CA de próstata dentro da sua prática médica. Como instrumentos de rastreamento, PSA é utilizado por 87,5% dos médicos, 75% usam anamnese e o exame físico e 25% utilizam o ultrassom de próstata. 33,3% afirmaram que não indicavam o rastreio do CA de próstata na prática clínica com as seguintes justificativas: “Falta de evidência científica”; “Mais evidências de malefícios que benefícios no rastreamento”; “Exames pouco sensíveis”. 16,6% dos pesquisados indicam o início dessa prática a partir de 40 anos, 50% acima de 50 anos e 8,3% afirmam que o rastreamento devia começar a partir de 45 anos. A partir de revisão bibliográfica e coleta de dados da pesquisa foi possível inferir que a falta de consenso entre as recomendações do MS e da SBU quanto ao rastreamento de Câncer de Próstata dificultam a aplicabilidade dessa prática na Atenção Primária em Saúde (APS). A falta de agentes educadores em saúde, o seguimento em periodicidade inadequada dos pacientes, a falta de interesse do paciente no rastreamento e a falta de verba para custeio de exames foram apontados como as principais barreiras enfrentadas pelos profissionais médicos na APS. Para que o cuidado em saúde seja centrado na pessoa, é necessário a prática da Prevenção Quaternária. Com base nesse conceito, o sobrediagnóstico e sobretratamento é evitado. Além disso, o usuário da rede de saúde fica ciente dos riscos e benefícios do rastreamento do CA de próstata e pode decidir, de forma compartilhada com o médico, se deseja ser submetido ao rastreio, tornando-se assim, agente ativo no processo de cuidado.

Alcohol dehydrogenase expression patterns in normal prostate, benign prostatic hyperplasia, and prostatic adenocarcinoma in African American and Caucasian men

Article

Feb 2022

Background: In situ metabolism of ethanol by alcohol dehydrogenases (ADHs) contributes to oxidative damage of cells and DNA and has been linked to carcinogenesis in numerous epithelial tissues. The goal of this study was to determine expression patterns of ADH1 and ADH7 isozymes in normal, hyperplastic (benign prostatic hyperplasia [BPH]) and neoplastic (prostate cancer [PCa]) prostate. Furthermore, racial differences in ADH expression between African Americans and Caucasians were investigated. Methods: ADH expression patterns were characterized by density analysis of ADH immunohistochemistry (n = 21) and real-time RT-PCR of total RNAs by laser-capture microdissection (n = 10) and whole tissue formalin-fixed paraffin embedded prostate biopsies (n = 63). Results: ADH protein is found in normal prostate and is primarily associated with glandular epithelium. Transcripts of ADH1B are suppressed in PCa compared to BPH (p = 0.0095). Racial differences in ADH7 transcripts exist between African American and Caucasian men. A total of 57.6% of biopsies from African American prostates have detectable ADH7 messenger RNA (mRNA) transcripts compared to the 13.3% of Caucasian prostate biopsies with detectable transcripts (p = 0.0005). This increased frequency of detection contributes to higher mean ADH7 mRNA transcript levels in African Americans (p = 0.001). Conclusions: To our knowledge this study is the first to report downregulation of ADH1B in neoplastic prostate at the transcriptional level, suggesting protective regulatory functions. ADH7 transcripts were not detectable in all samples and was found in higher frequency and amount in our African American samples. Racial differences in ADH7 within the prostate is a novel finding and should be investigated further.

Carriage of mutations R462Q (rs 486907) and D541E (rs 627928) of the RNASEL gene and risk factors in patients with prostate cancer in Burkina Faso.

Preprint

Full-text available

Nov 2021

Background Prostate cancer (Pca) is a public health problem that affects men, usually of middle age or older. It is the second most common cancer diagnosed in men and the fifth leading cause of death. The RNASEL gene located in 1q25 and identified as a susceptibility gene to hereditary prostate cancer, has never been studied in relation to prostate cancer in Burkina Faso. The aim of this study was to analyze the carriage of RNASEL R462Q and D541E mutations and risks factors in patients with prostate cancer in the Burkina Faso. Methods This case-control study included of 38 histologically diagnosed prostate cancer cases and 53 controls (cases without prostate abnormalities). Real-time PCR genotyping of R462Q and D541E variants using the TaqMan® allelic discrimination technique was used. Correlations between different genotypes and combined genotypes were investigated. Results The R462Q variant was present in 5.3% of cases and 7.5% of controls. The D541E variant was present in 50.0% of cases and 35% of controls. There is no association between R462Q variants (OR= 0.60; 95%IC, 0.10 - 3.51; p= 0.686) and D541E variants (OR=2.46; 95%IC, 0.78 - 7.80; p= 0.121) and genotypes combined with prostate cancer. However, there is a statistically significant difference in the distribution of cases according to the PSA rate at diagnosis (p ˂ 0.001). For the Gleason score distribution, only 13.2% of cases have a Gleason score greater than 7. There is a statistically significant difference in the Gleason score distribution of cases (p ˂ 0.001) Conclusions These variants, considered in isolation or in combination, are not associated with the risk of prostate cancer.

Association of Prostate Cancer with Nuts, Seeds, Alcohol and Processed Meats: A Worldwide Population-Based Study

Article

Nov 2020
NUTR CANCER

There are conflicting data with regards to the link between diet and the prostate cancer. The purpose of this study was to assess the association of dietary factors with incidence, prevalence and mortality rates of prostate cancer worldwide. We conducted an ecological study including 170 countries, whose data on incidence, prevalence and mortality rates of prostate cancer, dietary factors, and potentially confounding factors were available and collected in May 2020. Univariable and multivariable linear regression analyses were used. Consumption of nuts and seeds was inversely associated with incidence, prevalence and mortality rates of prostate cancer (β -0.7, P < 0.001; β -2.1, P < 0.001; β -0.1, P = 0.02; respectively). Intake of alcohol was associated with increased incidence, prevalence and mortality rates of prostate cancer (β 1.8, P < 0.001; β 4.5, P < 0.001; β 0.4, P < 0.001; respectively). Consumption of processed meats was also associated with increased incidence and prevalence rates of prostate cancer (β 0.6, P = 0.003; β 2.8, P = 0.001; respectively). These data suggest that consumption of nuts and seeds have a protective effect against prostate carcinogenesis, progression, and metastasis, while alcohol and processed meat increase these risks.

Traditional treatment strategies for alcoholism and the withdrawal symptoms

Chapter

Jan 2021

Ashok Singh

Alcoholic beverages, socially accepted drinks around the world, are consumed (legally by adults and illegally by minors) to socialize, celebrate, and relax. However, persistent drinking results in the development of tolerance that necessitates a perpetual increase in alcohol drinking to achieve desired effects. In genetically predisposed subjects and in the presence of certain environmental cues, chronic alcohol drinking induces addiction, characterized by excessive uncontrollable drinking associated with rapid onset of the withdrawal symptoms. Currently, there are only three medications approved by the U.S. FDA to treat alcoholism: disulfiram (alcohol metabolizing enzyme inhibitor), naltrexone (opiate receptor antagonist), topiramate, and acamprosate (NMDA receptor inhibitor). Because pharmacotherapy alone or in combination with behavioral approaches is only modestly effective in treating alcoholism symptoms, there is an urgent need for developing effective and safe therapies. In this chapter, we describe upcoming biopsychosocial (BPS), pharmacologic, pharmacogenetic, pharmacogenomic, genomic, phytomedicinal, and deep brain stimulation approaches for the treatment of alcoholism.

Prostate Cancer

Chapter

May 2017

Prävention in der Uroonkologie

Chapter

Jan 2020

Cancer Progress and Priorities: Prostate Cancer

Article

Feb 2020

Perceptions et comportements vis-à-vis de l’alcool à l’adolescence : Connaître les contextes et les motivations d’usage pour agir efficacement

Article

Jan 2019

Ivana Obradovic

Consommation d'alcool, comportements et conséquences pour la santé La reproduction (totale ou partielle) du BEH est soumise à l'accord préalable de Santé publique France. Conformément à l'article L. 122-5 du code de la propriété intellectuelle, les courtes citations ne sont pas soumises à autorisation préalable, sous réserve que soient indiqués clairement le nom de l'auteur et la source, et qu'elles ne portent pas atteinte à l'intégrité et à l'esprit de l'oeuvre. Les atteintes au droit d'auteur attaché au BEH sont passibles d'un contentieux devant la juridiction compétente. Retrouvez ce numéro ainsi que les archives du Bulletin épidémiologique hebdomadaire sur

Alcohol Intake and Risk of Lethal Prostate Cancer in the Health Professionals Follow-Up Study

Article

Apr 2019

PURPOSE It is unknown whether alcohol intake is associated with the risk of lethal (metastatic or fatal) prostate cancer. We examine (1) whether alcohol intake among men at risk of prostate cancer is associated with diagnosis of lethal prostate cancer and (2) whether intake among men with nonmetastatic prostate cancer is associated with metastasis or death. METHODS This prospective cohort study uses the Health Professionals Follow-Up Study (1986 to 2012). Our analysis of alcohol intake among men at risk of prostate cancer included 47,568 cancer-free men. Our analysis of alcohol intake among men with prostate cancer was restricted to 5,182 men diagnosed with nonmetastatic prostate cancer during follow-up. We examine the association of total alcohol, red and white wine, beer, and liquor with lethal prostate cancer and death. Multivariate Cox proportional hazards regression estimated hazard ratios (HRs) and 95% CIs. RESULTS Alcohol drinkers had a lower risk of lethal prostate cancer (any v none: HR, 0.84 [95% CI, 0.71 to 0.99]) without a dose-response relationship. Total alcohol intake among patients with prostate cancer was not associated with progression to lethal prostate cancer (any v none: HR, 0.99 [95% CI, 0.57 to 1.72]), whereas moderate red wine intake was associated with a lower risk (any v none: HR, 0.50 [95% CI, 0.29 to 0.86]; P trend = .05). Compared with none, 15 to 30 g/d of total alcohol after prostate cancer diagnosis was associated with a lower risk of death (HR, 0.71 [95% CI, 0.50 to 1.00]), as was red wine (any v none: HR, 0.74 [95% CI, 0.57 to 0.97]; P trend = .007). CONCLUSION Cancer-free men who consumed alcohol had a slightly lower risk of lethal prostate cancer compared with abstainers. Among men with prostate cancer, red wine was associated with a lower risk of progression to lethal disease. These observed associations merit additional study but provide assurance that moderate alcohol consumption is safe for patients with prostate cancer.

La mortalité attribuable à l’alcool en France en 2015

Article

Full-text available

Feb 2019

Aim - This study updates the estimation of alcohol-attributable mortality in metropolitan France for year 2015, last year with available mortality data. Method – The approach proposed by Guérin et al. to estimate the alcohol-attributable mortality in France for year 2009 was used. Survey and sales data were used to estimate the distribution of alcohol consumption in the population by sex and age. For each cause of death with risk modified by alcohol consumption, risk functions were extracted from recent meta-analyses. Combining the risks with the prevalence of consumption, alcohol-attributable fractions of mortality were calculated for each cause; these fractions were multiplied by the corresponding recorded number of deaths to obtain the number of deaths attributable to alcohol. Results – In 2015, 41,000 deaths were estimated to be attributable to alcohol consumption, 30,000 deaths among men and 11,000 deaths among women, representing respectively 11% and 4% of the mortality of men and women aged 15 and over. This includes 16,000 deaths from cancer, 9,900 deaths from a cardiovascular disease, 6,800 deaths from a digestive disease, 5,400 deaths from an external cause (accident or suicide) and more than 3,000 from other diseases (mental illnesses, behavioral disorders, etc.). The attributable-fraction for all alcohol-related pathologies accounts for 15% of deaths among 15-34 year-olds compared with 8% for ages 35+. Excluding external causes, about 500 deaths (1% of all deaths attributable to alcohol excluding external causes) are attributable to consumption between 7 and 18 grams of pure alcohol per day, and 90% of all deaths are attributable to consumption of more than 53 g / d. Conclusion – Although alcohol consumption has decreased significantly in France since the end of the 50's, it is estimated that 7% of the 580 000 deaths in the population aged 15 and over are attributable to alcohol in 2015. The health impact of alcohol consumption in France remains considerable. These results highlight the importance of public health policies aimed at reducing alcohol consumption in France.

Dietary Patterns Based on the Mediterranean Diet and DASH Diet are Inversely Associated with High Aggressive Prostate Cancer in PCaP

Article

Sep 2018
ANN EPIDEMIOL

Background: Several foods and nutrients have been linked to the development of prostate cancer, but the association between healthy dietary patterns and prostate cancer aggressiveness is less studied. The aim of this study was to evaluate the relationship between the Mediterranean diet (MED) and Dietary Approaches to Stop Hypertension (DASH) diet scores and prostate cancer aggressiveness by race. Methods: Data from the population-based, case-only North Carolina-Louisiana Prostate Cancer Project (PCaP) were used to examine the association between diet quality, measured by MED and DASH scores, and prostate cancer aggressiveness in 1899 African American (AA) and European American (EA) research subjects. Dietary intake was assessed using a modified National Cancer Institute Diet History Questionnaire. Logistic regression was used to estimate adjusted odds ratios (ORs) and 95% confidence intervals (CIs) for high versus low-intermediate aggressive prostate cancer. Results: Higher MED scores were inversely associated with high aggressive prostate cancer overall (OR: 0.66; 95% CI: 0.46, 0.95 for high versus low scores); results were similar for AA and EA men. A weaker inverse association between DASH scores and prostate cancer aggressiveness was found (OR: 0.76; 95% CI: 0.55, 1.06). Conclusions: Higher diet quality, as represented by a Mediterranean-style diet or DASH diet, may reduce the odds of high aggressive prostate cancer.

Blood pressure indices and disease severity in patients with sickle cell anaemia

Article

Full-text available

Jan 2016
Niger J Med

Background: Individuals with sickle cell anaemia (SCA) have lower systemic blood pressures compared to individuals with haemoglobin Hb AA phenotype. Objective: Seventy-nine (79) individuals with SCA (subjects) in steady state and 50 age-matched individuals with Hb AA (controls) were prospectively studied. Height, blood pressure (BP), weight, creatinine clearance (by 24-hour urine collection), full blood count (FBC) and reticulocyte count were obtained from all subjects and controls. Body mass index (BMI), corrected reticulocyte count, mean arterial pressure (MAP) and pulse pressure (PP) were calculated using standard protocols.The frequency of vaso-occlusive crises in the last one year and number of blood transfusions in the last two years were obtained from subjects. Data was analyzed using descriptive and inferential statistics and p ≤0.05 was used to define the level of statistical significance. Methodology: Seventy-nine (79) individuals with SCA (subjects) in steady state and 50 age-matched individuals with Hb AA (controls) were prospectively studied. Height, blood pressure (BP), weight, creatinine clearance (by 24-hour urine collection), full blood count (FBC) and reticulocyte count were obtained from all subjects and controls. Body mass index (BMI), corrected reticulocyte count, mean arterial pressure (MAP) and pulse pressure (PP) were calculated using standard protocols.The frequency of vaso-occlusive crises in the last one year and number of blood transfusions in the last two years were obtained from subjects. Data was analyzed using descriptive and inferential statistics and p ≤0.05 was used to define the level of statistical significance. Results: The systolic (105.52±11.75mmHg and 113.20±7.94mmHg respectively; P = 0.01), diastolic (62.59±9.33mmHg and 75.40±5.70mmHg respectively; P=0.03) and mean arterial pressures (76.90±8.81mmHg and 88.00±5.51mmHg respectively; P =0.04) were significantly lower in subjects when compared with controls. ; pulse pressure (PP) was however significantly higher in subjects than controls (42.92±10.91mmHg and 37.80±7.43mmHg respectively (P = 0.03). In female subjects, the white cell count was negatively correlated with systolic BP (r = -0.39;P = 0.01) and PP (r = -0.33; P = 0.03). Conclusion: Lower systolic and pulse pressures may predict worsening disease severity in individuals with sickle cell anaemia.

Efficacy of peritonsillar infilltration of ketamine, tramadol, and lidocaine for prevention of post tonsillectomy pain

Article

Full-text available

Jan 2016
Niger J Med

Backgrounds: Tonsillectomy is one of the most common surgeries in children. Controlling pain after tonsillectomy is still controversial. In this study, the efficacy of peritonsillar injection of lidocaine, tramadol, ketamine, and placebo is compared on post tonsillectomy pain. Methods: In a randomized double-blind clinical trial, 120 patients referring for tonsillectomy to Imam Khomeini hospital in Ahvaz, Iran were recruited into four groups: ketamine, tramadol, lidocaine, and normal saline. One milliliter of medications was injected in each tonsil. Surgery was performed by a surgeon with sharp dissection technique without electrocautery. Pain was recorded 1, 4, 8, 16, and 24 hour(s) after the operation Results: Baseline characteristics such as age, sex, weight, height, and surgery and anesthesia time did not differ significantly among four groups. Pain scores decreased over time in all groups. No significant difference was observed among ketamine, tramadol, lidocaine, and placebo regarding pain quantity, surgery time, the first time of analgesic requirement, hospital stay, and beginning liquid diet. Conclusion: Local injection of ketamine, tramadol, and lidocaine were not significantly different from placebo for prevention of pain in the first 24 hours after tonsillectomy.

Hypereosinophilic syndrome with severe hypokalaemia in a Nigerian woman: A case report

Article

Full-text available

May 2018

Adekunle Alagbe

Introduction: Hypereosinophilic syndrome (HES) is a rare disorder. It is defined as eosinophilia of greater than1.5x109 /L persisting for at least 6 months or death before 6 months without an identifiable cause and with eosinophil-mediated organ dysfunction. We present a rare case of hypereosinophilic syndrome with severe hypokalaemia in a Nigerian female patient. Case presentation: A 43year old food vendor referred to the Haematology Department, University College Hospital, Ibadan on account of a 6-week history of cough productive of mucoid, brownish, foul smelling sputum with associated breathlessness, high grade intermittent fever, and intense pruritus. She had accompanying non-projectile,non-bloody vomiting of recently ingested meals. There was absolute eosinophilia of 83x109/L and bone marrow cytology revealed marked eosinophilia with blasts of less than 5%. She also had asymptomatic severe hypokalaemia (1.9mmol/l) likely due to vomiting and reduced dietary intake. The aetiology of the hypereosinophilia could not be ascertained.She was admitted and commenced on intranasal oxygen, Tabs Loratidine, intravenous hydration.The severe hypokalaemia was corrected with IV KCL over 48hours followed with the administration of slow K tablets 600mg tds. She also had tabs Hydroxyurea for cytoreduction and Allopurinol to prevent hyperuricaemia. She improved with the above line of management. Conclusion: This appears to be the first reported case of HES with asymptomatic severe hypokalaemia in the literature. Being a rare disorder it could easily have been missed without a review of the peripheral blood film and marrow aspirate. This finding suggests a possible relationship between hypereosinophilia and hypokalemia which needs to be explored.

Grundlagen der Prävention

Chapter

Mar 2014

Die „Reparaturmedizin“ stößt zunehmend an ihre Grenzen. Zum einen wirken sich medizinische Fortschritte in der Behandlung fortgeschrittener Tumoren kaum mehr messbar auf die Lebenserwartung der Gesamtbevölkerung aus. Zum anderen sind mit neuen Therapiekonzepten i. d. R. hohe Kosten verbunden. Durch das Vermeiden von Erkrankungen könnte die Prävention sowohl die krankheitsbedingte als auch die therapiebezogene Morbidität und Mortalität senken. Theoretisch sind Einsparungen bei den Therapiekosten denkbar. Seit Jahren wird daher von Medizin und Politik die Bedeutung der Krebsprävention betont. Prävention umschreibt generell alle Handlungen, die einer möglichen Gefahr vorbeugen sollen. In diesem Beitrag wird ausschließlich auf die Primärprävention urologischer Malignome eingegangen. Darunter fallen Maßnahmen, die ergriffen werden, ohne dass Symptome oder Beschwerden vorliegen. Da es sich somit um die Behandlung gesunder Menschen handelt, gelten naturgemäß andere Ansprüche in Hinblick auf Risiken und Nebenwirkungen als für die Behandlung erkrankter Personen.

Meta-analysis of Observational Studies in EpidemiologyA Proposal for Reporting

Article

Full-text available

Apr 2000

Because of the pressure for timely, informed decisions in public health and clinical practice and the explosion of information in the scientific literature, research results must be synthesized. Meta-analyses are increasingly used to address this problem, and they often evaluate observational studies. A workshop was held in Atlanta, Ga, in April 1997, to examine the reporting of meta-analyses of observational studies and to make recommendations to aid authors, reviewers, editors, and readers. Twenty-seven participants were selected by a steering committee, based on expertise in clinical practice, trials, statistics, epidemiology, social sciences, and biomedical editing. Deliberations of the workshop were open to other interested scientists. Funding for this activity was provided by the Centers for Disease Control and Prevention. We conducted a systematic review of the published literature on the conduct and reporting of meta-analyses in observational studies using MEDLINE, Educational Research Information Center (ERIC), PsycLIT, and the Current Index to Statistics. We also examined reference lists of the 32 studies retrieved and contacted experts in the field. Participants were assigned to small-group discussions on the subjects of bias, searching and abstracting, heterogeneity, study categorization, and statistical methods. From the material presented at the workshop, the authors developed a checklist summarizing recommendations for reporting meta-analyses of observational studies. The checklist and supporting evidence were circulated to all conference attendees and additional experts. All suggestions for revisions were addressed. The proposed checklist contains specifications for reporting of meta-analyses of observational studies in epidemiology, including background, search strategy, methods, results, discussion, and conclusion. Use of the checklist should improve the usefulness of meta-analyses for authors, reviewers, editors, readers, and decision makers. An evaluation plan is suggested and research areas are explored.

Bias in Meta-Analysis Detected by a Simple, Graphical Test

Article

Full-text available

Sep 1997

Objective: Funnel plots (plots of effect estimates against sample size) may be useful to detect bias in meta-analyses that were later contradicted by large trials. We examined whether a simple test of asymmetry of funnel plots predicts discordance of results when meta-analyses are compared to large trials, and we assessed the prevalence of bias in published meta-analyses. Design: Medline search to identify pairs consisting of a meta-analysis and a single large trial (concordance of results was assumed if effects were in the same direction and the meta-analytic estimate was within 30

A Case Control Study on Prostate Cancer in Delhi

Article

Full-text available

Jan 2010
ASIAN PAC J CANCER P

Prostate cancer is one of the first five leading site of cancers in Delhi. The incidence rate is higher in North India compared to South India and it is rapidly increasing. A population based case-control study on prostate cases was therefore carried out in Delhi to identify potential risk factors. Cases were each matched with two controls. Past smoking and current alcohol consumption significantly increased the risk of prostate cancer. No statistically significant association was found with family history of cancer or prostate cancer. The risk of prostate cancer declined with increasing dietary consumption of tea, citrus fruits and melon. A statistically significant marginal increase in the odds ratio was observed with the consumption of eggs, fish and sunflower oil. Though an increased risk of prostate cancer was evident among vasectomised men, the association was not statistically significant.

Alcoholic Beverages and Prostate Cancer in a Prospective US Cohort Study

Article

Full-text available

Oct 2010

Despite numerous investigations, the correlation between alcohol consumption and prostate cancer risk remains uncertain. This report investigated the association between alcohol use and prostate cancer risk in a prospective cohort study of 294,707 US men aged 50-71 years in 1995-1996. Cox proportional hazards regression models with hazard ratios and 95% confidence intervals were adjusted for characteristics including age, race, body mass index, physical activity, and family history of prostate cancer, as well as testing for prostate-specific antigen and a digital rectal examination. There were 15,327 nonadvanced and 1,900 advanced prostate cancers identified through 2003 and 514 fatal cases through 2005. Risk of nonadvanced prostate cancer was 25% higher for men consuming ≥6 drinks daily (hazard ratio = 1.25, 95% confidence interval: 1.13, 1.37), 19% higher for men consuming 3-<6 drinks daily, and 6% higher for men consuming up to 3 drinks daily, compared with nondrinkers. The association between alcohol consumption and nonadvanced prostate cancer risk did not differ appreciably by age, family history of prostate cancer, smoking status, body mass index, or self-reported prostate-specific antigen testing and digital rectal examination (the latter available for >60% of respondents). The authors observed no association between alcohol intake and advanced prostate cancer and an inverse association with fatal prostate cancer among heavy drinkers. These findings suggest that higher alcohol consumption modestly increases nonadvanced prostate cancer risk.

A review of human carcinogens--Part E: tobacco, areca nut, alcohol, coal smoke, and salted fish

Article

Full-text available

Nov 2009

Folate Intake and Prostate Cancer Risk: A Case-Control Study

Article

Full-text available

Sep 2009
NUTR CANCER

Folate deficiency has been implicated in the carcinogenesis of several tumor types. The role of folate in prostate cancer remains indeterminate. We investigated folate as a risk factor for prostate cancer among 140 biopsy-confirmed prostate cancer patients, 230 age-matched clinic controls, and 250 negative prostate biopsy controls. Dietary folate intake was inversely associated with overall risk of prostate cancer as compared to clinic controls (P for a linear trend = 0.003). When stratified by disease severity, dietary folate and folate from natural sources were associated with reduced risk of high-grade cancer as compared to both clinic controls (P for a linear trend = 0.0009 and 0.02, respectively) and biopsy negative controls (P for a linear trend = 0.03 and 0.05, respectively). There was no interaction between alcohol consumption and folate intake. These analyses support an inverse association between dietary folate intake and prostate cancer risk and primarily risk of high-grade prostate cancer.

Validity and Reproducibility of Alcohol Consumption in Italy

Article

Full-text available

Aug 1996

Background: The reproducibility and validity of alcohol consumption has not been adequately studied, particularly in mediterranean countries, where alcohol drinking is a widespread habit, especially during meals. Methods: We compared alcohol consumption measured by two interviewer-administered food frequency questionnaires (FFQ) with average intake derived from two 7-day dietary (7-DD) records (the reference method) on 395 volunteers. Different types of alcoholic beverages were considered separately in order to verify the ability of the questionnaire to assess detailed patterns of alcohol intake. Results: A satisfactory level of reproducibility and validity of the pattern of alcohol consumption across different levels and types of alcoholic beverage intake was observed. The reproducibility of wine and total alcohol intake showed correlation coefficients > 0.75 in both sexes. The validity was somewhat higher for wine (around 0.70) than for other alcoholic beverages and total alcohol intake. This is probably accounted for by the more regular pattern of wine consumption during the year as compared to other alcoholic beverages (beer, grappa, etc) which are more strongly influenced by seasonal and daily variations. However, about 30% of abstainers according to FFQ were drinkers by the reference method. The opposite was observed in only 4% of subjects. Conclusion: The FFQ is a reliable and valid instrument for collecting alcohol intake in regular drinkers. Lower validity in irregular drinkers may be due to seasonal variation and/or inadequacy of the FFQ to capture irregular patterns of consumption and/or inadequacy of the average of two 7-DD as a reference method. Furthermore, a considerable degree of misclassification was observed between non-drinkers and moderate drinkers.

One-Carbon Metabolism and Prostate Cancer Risk: Prospective Investigation of Seven Circulating B Vitamins and Metabolites

Article

Full-text available

Jun 2009

Components of one-carbon metabolism are believed to influence cancer development with suggested mechanisms, including DNA methylation and DNA repair mechanisms. However, few prospective studies have investigated one-carbon metabolism in relation to prostate cancer risk, and the results have been conflicting. The aim of this study was to do a comprehensive investigation of the components of one-carbon metabolism in relation to prostate cancer risk. A panel of seven circulating B vitamins and related metabolites was selected, most of which have not been studied before. We analyzed plasma concentrations of betaine, choline, cysteine, methionine, methylmalonic acid (MMA), vitamin B2, and vitamin B6 in 561 cases and 1,034 controls matched for age and recruitment date, nested within the population-based Northern Sweden Health and Disease Cohort. Relative risks of prostate cancer were estimated by conditional logistic regression. Positive associations with prostate cancer risk were observed for choline and vitamin B2, and an inverse association was observed for MMA. The relative risks for a doubling in concentrations were 1.46 [95% confidence interval (95% CI), 1.04-2.05; P(trend) = 0.03] for choline, 1.11 (95% CI, 1.00-1.23; P(trend) = 0.04) for vitamin B2, and 0.78 (95% CI, 0.63-0.97; P(trend) = 0.03) for MMA. Concentrations of betaine, cysteine, methionine, and vitamin B6 were not associated with prostate cancer risk. The results of this large prospective study suggest that elevated plasma concentrations of choline and vitamin B2 may be associated with an increased risk of prostate cancer. These novel findings support a role of one-carbon metabolism in prostate cancer etiology and warrant further investigation.

Association of GSTM3 intron 6 variant with cigarette smoking, tobacco chewing and alcohol as modifier factors for prostate cancer risk

Article

Full-text available

Aug 2008
ARCH TOXICOL

Variations in glutathione-S-transferases (GSTs) genes may alter the catalytic efficiency of GST isoenzymes leading to potential increase in susceptibility to carcinogens present in cigarette smoke and tobacco. The present study aimed to explore the association of GSTM3 intron 6 polymorphism with susceptibility to prostate cancer (PCa), and to assess risks associated with cigarette smoking, tobacco chewing and alcohol consumption in PCa patients of North India. The study included 135 PCa patients and 169 controls. All subjects were genotyped for 3-bp deletion in intron 6 of GSTM3. Risk of developing prostate cancer associated with GSTM3 AB + BB was 2.5-fold (OR = 2.51, P = 0.028) as compared to AA genotype. Patients who were either smokers and/or had alcohol habits demonstrated a strong association with GSTM3 (AB + BB) genotype (OR = 4.11, P = 0.046; OR = 4.38, P = 0.027, respectively). Our results suggested GSTM3 (AB + BB) genotype to be significantly associated with PCa risk. The risk was even more apparent in case of cigarette smokers and alcohol consumers.

Case-control study of prostate cancer in black patients in Soweto, South Africa

Article

Full-text available

Apr 1992

The BJC is owned by Cancer Research UK, a charity dedicated to understanding the causes, prevention and treatment of cancer and to making sure that the best new treatments reach patients in the clinic as quickly as possible. The journal reflects these aims. It was founded more than fifty years ago and, from the start, its far-sighted mission was to encourage communication of the very best cancer research from laboratories and clinics in all countries. The breadth of its coverage, its editorial independence and it consistent high standards, have made BJC one of the world's premier general cancer journals. Its increasing popularity is reflected by a steadily rising impact factor.

Epidemiological Study of Prostatic Cancer by Matched-Pair Analysis

Article

Mar 1986

Measuring inconsistency in meta-analysis

Article

Jan 2003

Global Cancer Statistics

Article

Jan 2011

Socio-economic and lifestyle factors associated with the risk of prostate cancer

Article

Apr 2000

International and interethnic differences in prostate cancer incidence suggest an environmental aetiology, and lifestyle and socioeconomic factors have been studied, but with divergent results, Information on a cohort of 22 895 Norwegian men aged 40 years and more was obtained from a health examination and two self-administered questionnaires. Information on incident cases of prostate cancer was made available from the Cancer Registry. We used the Cox proportional hazards model to calculate incidence rate ratios as estimates of the relative risk (RR) with 95% confidence interval (CI), Reported P-values are two-sided. During a mean follow-up of 9.3 years, 644 cases were diagnosed. Risk was elevated among men in occupations of high compared to low socio-economic status (RR = 1.30; 95% CI 1.05-1.61), and among men with high education compared to the least educated (RR = 1.56; 95% CI 1.11-2.19). A RR of 1.56 (95% CI 0.97-2.44) suggests a higher risk among divorced or separated men, compared with married men. We also found indications of a weak negative association with leisure-time physical activity (RR = 0.80; 95% CI 0.62-1.03 for high vs low activity), a weak positive association with increasing number of cigarettes (P = 0.046), while alcohol consumption was not related to the risk of prostate cancer. These results show that high socio-economic status is associated with increased risk of prostate cancer, and that divorced or separated men might be at higher risk than married men. Data from this study also indicate that high levels of physical activity may reduce prostate cancer risk. (C) 2000 Cancer Research Campaign.

The epidemiology of prostate cancer

Article

Jan 1980

Epidemiological investigations may allow conclusions on the etiology of prostate cancer. Such data from autopsy studies and morbidity as well as mortality statistics are based on local or national cancer registries and informations obtained from death certificates. Clear cut evidence of certain environmental factors to be involved in prostate cancer development derives from the situation in Japan: (1) high incidence of latent carcinoma despite a 10-fold lower morbidity of manifest carcinoma compared to the western hemisphere; (2) increased grade of malignancy of latent carcinoma and approximating morbidity and mortality rates to the population of the country of immigration. A comparable situation is seen in the Jewish population. In Europe an absolute increase of morbidity is encountered: Cancer Registries of Birmingham, Hamburg, Sweden, Halle (DDR). According to the UICC following incidence rates can be calculated n per 100,000 population per year): USA - 33.9; Sweden - 26.5; England - 17.4; GFR - 16.5; Japanese immigrants - 12.6; Japan - 3.8, China - 0.9. German mortality data (Cancer Atlas of the GFR), which are based on death certificates, show a steady increase between 1955 and 1975 without conclusive differences for the various 'Bundeslander'. On a world-wide basis neither studies on endocrinology nor on the socioeconomic status or sexual life, infectious as well as genetic factors have provided a valuable clue for the etiology of prostatic carcinoma.

Global cancer stat

Article

Jan 2011
CA-CANCER J CLIN

Alcohol and Prostate Cancer in the NHANES I Epidemiologic Follow-Up Study

Article

May 1999
ANN EPIDEMIOL

PURPOSE: We prospectively investigated the association between alcohol consumption and prostate cancer in the Epidemiologic Followup Study (NHEFS) of the first National Health and Nutrition Examination Survey (NHANES I).METHODS: There were two cohorts: 1) Cohort I, followed from baseline (1971–75) through 1992, included 5766 men ages 25–74 years (median follow-up = 17 years); and 2) Cohort II, followed from the first follow-up round for Cohort I (1982–84) through 1992, included the 3868 men in Cohort I free of prostate cancer in 1982–84 (median follow-up = 9 years). Alcohol consumption was assessed at baseline as usual consumption, and at follow-up as usual consumption and as distant past consumption at the ages of 25, 35, 45, and 55.RESULTS: There were 252 incident cases of prostate cancer. Consistent with most previous studies, we found no significant associations between usual total alcohol consumption and prostate cancer in Cohorts I or II [p = non significant (NS)], except for a significant inverse association at the heaviest level of drinking in Cohort II [relative risk (RR) = 0.23, 95% confidence interval (CI) = 0.06–0.95]. Further study of heavy drinkers in Cohort II revealed significant inverse associations between distant past heavy drinking (defined as > 25 drinks/week) and prostate cancer at age 25 (RR = 0.20, 95% CI = 0.06–0.63), age 35 (RR = 0.30, 95% CI = 0.12–0.77), and age 45 (RR = 0.39, 95% CI = 0.17–0.93), but not at age 55 (RR = 0.43, 95% CI = 0.17–1.10).CONCLUSIONS: These results suggest that it may be important to consider distant past alcohol consumption in etiologic studies of prostate cancer. However, our results were based on small numbers of cases who were heavy drinkers and require replication.

Animal Fat Consumption and Prostate Cancer: A Prospective Study in Hawaii

Article

May 1994
EPIDEMIOLOGY

Whereas case-control studies have been very consistent in suggesting a positive association between intake of dietary fat, especially animal fat, and prostate cancer, the results from past cohort studies have been mostly inconclusive. In this study, we evaluated consumption of high-fat animal products, raw vegetables, and fresh fruits, as well as obesity, smoking, and drinking, in relation to subsequent occurrence of prostate cancer. We studied a cohort of 20,316 men of various ethnicities interviewed between 1975 and 1980 in Hawaii. As of December 1989, 198 incident cases with invasive prostate cancer were identified by computer-assisted linkage of this cohort to the statewide Surveillance, Epidemiology, and End Results registry. Relative risks (RRs) for prostate cancer computed by proportional hazards regression were elevated for intake of beef [RR for highest to lowest tertile of intake = 1.6; 95% confidence interval (CI) = 1.1-2.4] and milk (RR = 1.4; 95% CI = 1.0-2.1), and for a summary variable for intake of high-fat animal products (RR = 1.6; 95% CI = 1.0-2.4). Weight was not consistently associated with prostate cancer, but there was an association with height (>167 cm) (RR = 1.8; 95% CI = 1.0-3.2 for the third and fourth quartiles relative to the lowest quartile in height). These associations were stronger in men diagnosed before age 72.5 years. The risk estimates for raw vegetable and fresh fruit intakes were close to 1.0. Smoking and alcohol drinking appeared to be unrelated to risk. This study provides further evidence for a role of animal fat in the etiology of prostate cancer and indicates that it may act by shortening the latency period of the disease. (C) Lippincott-Raven Publishers.

Cohort study of diet, lifestyle, and prostate cancer in Adventist men

Article

Aug 1989
CANCER-AM CANCER SOC

Dietary and lifestyle characteristics were evaluated in relation to subsequent prostatic cancer risk in a cohort of approximately 14,000 Seventh-day Adventist men who completed a detailed lifestyle questionnaire in 1976 and who were monitored for cancer incidence until the end of 1982. During the 6-year follow-up period, 180 histologically confirmed prostatic cancers were detected among some 78,000 man-years of follow-up. Increasing educational attainment was associated with significantly decreased risk of prostate cancer in this study; age at first marriage was also inversely associated with risk, although this was not significant. There was no relationship between body mass index (as measured by Quetelet's Index) and risk. A history of prostate “trouble” was associated with a 60% increase in risk which was highly significant. Although there were suggestive relationships between increasing animal product consumption and increased risk, these results did not persist after accounting for the influence of fruit and vegetable consumption. Nor was exposure to the vegetarian lifestyle during the childhood years associated with alterations in subsequent risk. However, increasing consumption of beans, lentils and peas, tomatoes, raisin, dates, and other dried fruit were all associated with significantly decreased prostate cancer risk.

Epidemiological study of prostatic cancer by matched-Pair analysis

Article

Feb 1985
PROSTATE

In 1976, we designed an original questionnaire, consisting of 111 questions, directed at the epidemiology of prostatic disease. A case-control study by matched-pair analysis was conducted on 100 controls matched for age within 1 year and for residence in the same prefecture. Patients with prostatic cancer were distinguished from the general population of men by the following characteristics: 1) belonging to middle or lower socioeconomical class, 2) marriage at a young age and a long married life, 3) precocity, 4) vigorous sexual life followed by a fall-off of sexuality in later life, and 5) Western food habits. Based on analysis of results obtained in this case-control study, a high-risk group for prostatic cancer was outlined.

Epidemiologic determinants of clinically relevant prostate cancer

Article

May 2000
INT J CANCER

While tumor volume and Gleason scores are the best available prognostic indicators for prostate cancer, contemporary predictive methods are unable to identify which men with Gleason scores of 7 have clinically insignificant tumors that will not progress and which men will develop highly aggressive prostate cancer. Our objective was to evaluate potential environmental determinants of significant prostate cancer. Subjects were patients identified from a university-based hospital and tertiary cancer center who had undergone radical prostatectomy for prostate cancer. Cases were 103 patients whose tumor volumes were ≤0.5 ml. The comparison group was comprised of 225 men with larger-volume disease or with histologic evidence of extracapsular extension but without lymph node involvement. The matching criteria were ethnicity, age at diagnosis (±5 years), and date of diagnosis (±1 year). Epidemiologic data, current weight, and height were obtained. The comparison group was significantly more likely than cases to be current smokers (7.6% vs. 3.9%) and to report more pack-years smoked (30.1 vs. 23.0 years, p = 0.06). Cases tended to weigh less (85.2 vs. 87.1 kg, p = 0.1) and have lower body mass indices (26.8 vs. 27.6, p = 0.07). A similar trend was evident for weight at age 40 (79 vs. 81 kg). Cases reported a mean weight gain of 4.9 kg compared with 6.6 kg in the comparison subjects (p = 0.05) between the ages of 25 and 40. There was no significant difference in weight gain from age 40 to current age. Cases were more likely to report having prostate cancer screening (90% vs. 80%, p = 0.02). Cases with Gleason scores ≤7 (3 + 4, with 3 being the dominant grade) were younger at diagnosis than those with scores of 7 (4 + 3, with 4 being the dominant grade), were more likely (93%) to have had prostate screening, were less likely to be current smokers (4%), reported the fewest pack-years smoked (21.5 vs. 28.6 years for high-score cases and 30.1 for comparison subjects), and had the lowest average weight gain from ages 25 to 40 (4.62 vs. 6.31 kg for high-score cases). Weight gain in early adulthood and smoking thus appear to be important predictors of virulent prostate cancer. Our data also suggest that prior screening is associated with diagnosis of lower-volume and lower-score disease.Int. J. Cancer 89:259–264, 2000. © 2000 Wiley-Liss, Inc.

Association of GSTM3 intron 6 variant with cigarette smoking, tobacco chewing and alcohol as modifier factors for prostate cancer risk

Article

Variations in glutathione-S-transferases (GSTs) genes may alter the catalytic efficiency of GST isoenzymes leading to potential increase in susceptibility to carcinogens present in cigarette smoke and tobacco. The present study aimed to explore the association of GSTM3 intron 6 polymorphism with susceptibility to prostate cancer (PCa), and to assess risks associated with cigarette smoking, tobacco chewing and alcohol consumption in PCa patients of North India. The study included 135 PCa patients and 169 controls. All subjects were genotyped for 3-bp deletion in intron 6 of GSTM3. Risk of developing prostate cancer associated with GSTM3 AB+BB was 2.5-fold (OR=2.51, P=0.028) as compared to AA genotype. Patients who were either smokers and/or had alcohol habits demonstrated a strong association with GSTM3 (AB+BB) genotype (OR=4.11, P=0.046; OR=4.38, P=0.027, respectively). Our results suggested GSTM3 (AB+BB) genotype to be significantly associated with PCa risk. The risk was even more apparent in case of cigarette smokers and alcohol consumers.

Alcohol use and mortality in the Japan Collaborative Cohort Study for Evaluation of Cancer (JACC)

Article

Jan 2007
ASIAN PAC J CANCER P

Kotaro Ozasa

Alcohol use was examined for its influence on mortality in the Japan Collaborative Cohort. While overall risk of death, as well as ischemic heart disease, were reduced with moderate consumption, increase was noted with heavy intake, even after cessation. With heavy consumption, overall cancers were also increased. In males, risk of oesophageal cancer was particularly elevated and risk of liver and renal cancer was found to be increased in ex-drinkers. Heavy consumption appears to be also a risk factor for rectal and gallbladder cancer. Furthermore, cerebrovascular disease was increased with dose-dependence.

A prospective cohort study on consumption of alcoholic beverages in relation to prostate cancer incidence (The Netherlands)

Article

Dec 1999

To examine alcohol consumption in relation to prostate cancer incidence in the Netherlands Cohort Study. At baseline in 1986, 58,279 men aged 55-69 years completed a self-administered questionnaire on diet, consumption of alcoholic beverages and other risk factors for cancer. For data processing and analyses the case-cohort approach was used. After 6.3 years of follow-up, 680 incident primary prostate cancer cases were available for analysis. In multivariate analyses adjusted for age, socioeconomic status and family history of prostate cancer, no association between total alcohol consumption, alcohol intake from beer and liquor and prostate cancer risk was found. Increased associations were found for alcohol from white wine and fortified wines compared to nondrinkers, but not for red wine. The RRs (95% CI) in the intake category of > or = 15 g/day were 3.3 (1.2-9.2) and 2.3 (1.2-4.7), respectively, after additional adjustment for total alcohol intake. There was, however, no significant trend in risk. Alcohol intake was more strongly related with localized than with advanced prostate tumors. Our results do not support an important role for alcohol in prostate cancer etiology. Nevertheless, for specific types of alcoholic beverages, particularly wines, a positive association was suggested which needs examination in further studies.

Global cancer statistics. CA. Cancer J Clin

Article

Feb 2011
CA-CANCER J CLIN

The global burden of cancer continues to increase largely because of the aging and growth of the world population alongside an increasing adoption of cancer-causing behaviors, particularly smoking, in economically developing countries. Based on the GLOBOCAN 2008 estimates, about 12.7 million cancer cases and 7.6 million cancer deaths are estimated to have occurred in 2008; of these, 56% of the cases and 64% of the deaths occurred in the economically developing world. Breast cancer is the most frequently diagnosed cancer and the leading cause of cancer death among females, accounting for 23% of the total cancer cases and 14% of the cancer deaths. Lung cancer is the leading cancer site in males, comprising 17% of the total new cancer cases and 23% of the total cancer deaths. Breast cancer is now also the leading cause of cancer death among females in economically developing countries, a shift from the previous decade during which the most common cause of cancer death was cervical cancer. Further, the mortality burden for lung cancer among females in developing countries is as high as the burden for cervical cancer, with each accounting for 11% of the total female cancer deaths. Although overall cancer incidence rates in the developing world are half those seen in the developed world in both sexes, the overall cancer mortality rates are generally similar. Cancer survival tends to be poorer in developing countries, most likely because of a combination of a late stage at diagnosis and limited access to timely and standard treatment. A substantial proportion of the worldwide burden of cancer could be prevented through the application of existing cancer control knowledge and by implementing programs for tobacco control, vaccination (for liver and cervical cancers), and early detection and treatment, as well as public health campaigns promoting physical activity and a healthier dietary intake. Clinicians, public health professionals, and policy makers can play an active role in accelerating the application of such interventions globally.

Alcohol consumption and mortality from all-cause and cancers among 1.34 million Koreans: the results from the Korea National Health Insurance Corporation's health examinee cohort in 2000

Article

Oct 2010
CANCER CAUSE CONTROL

The relationship between alcohol and cancer death has not been well established in Asian population, particularly among women. We evaluated the association between alcohol consumption and all-cause and cancer mortality in a large-scale prospective study of 1,341,393 Korean men and women aged 40-69 years who participated in health examination in 2000. After 5 years follow-up for mortality (2001-2005), 19,375 deaths were identified, and Cox regression was used for longitudinal analyses. The J-shaped relationship between alcohol consumption and all-cause and all-cancer mortality was found in men. However, heavy drinking was positively associated with the risk of all-cause and all-cancer mortality in men and women. Alcohol consumption was positively associated with the risk of cancer mortality such as cancers of liver, stomach, colorectal, prostate, esophageal, brain, and larynx and cancer of lips, oral cavity, pharynx in men and increased the risk of all-cancer and colorectal cancer mortality in women. Kidney cancer mortality was inversely associated with alcohol consumption in men. Heavy drinking showed an increased mortality risk of all-cause, all-cancer, and several cancers in men and women. There was no favorable effect of light drinking on all-cause and all-cancer mortality for women.

Random-effects meta-regression models for studying nonlinear dose–response relationship, with an application to alcohol and esophageal squamous cell carcinoma

Article

Nov 2010
STAT MED

A fundamental challenge in meta-analyses of published epidemiological dose-response data is the estimate of the function describing how the risk of disease varies across different levels of a given exposure. Issues in trend estimate include within studies variability, between studies heterogeneity, and nonlinear trend components. We present a method, based on a two-step process, that addresses simultaneously these issues. First, two-term fractional polynomial models are fitted within each study included in the meta-analysis, taking into account the correlation between the reported estimates for different exposure levels. Second, the pooled dose-response relationship is estimated considering the between studies heterogeneity, using a bivariate random-effects model. This method is illustrated by a meta-analysis aimed to estimate the shape of the dose-response curve between alcohol consumption and esophageal squamous cell carcinoma (SCC). Overall, 14 case-control studies and one cohort study, including 3000 cases of esophageal SCC, were included. The meta-analysis provided evidence that ethanol intake was related to esophageal SCC risk in a nonlinear fashion. High levels of alcohol consumption resulted in a substantial risk of esophageal SCC as compared to nondrinkers. However, a statistically significant excess risk for moderate and intermediate doses of alcohol was also observed, with no evidence of a threshold effect.

Prostate Cancer Risk and Exposure to Pesticides in British Columbia Farmers

Article

Feb 2011
PROSTATE

Several epidemiologic studies have reported an increased risk of prostate cancer among farmers. Our aim was to assess the risk of developing prostate cancer in relation to exposure to specific active compounds in pesticides. A case-control approach was used with 1,516 prostate cancer patients and 4,994 age-matched internal controls consisting of all other cancer sites excluding lung cancer and cancers of unknown primary site. Lifetime occupational history was obtained through a self-administered questionnaire and used in conjunction with a job exposure matrix to estimate the participants' lifetime cumulative exposure to approximately 180 active compounds in pesticides. Conditional logistic regression was used to assess prostate cancer risk, adjusting for potential confounding variables and effect modifiers. These include age, ethnicity, alcohol consumption, smoking, education, and proxy respondent. The significant association between prostate cancer risk and exposure to DDT (OR = 1.68; 95% CI: 1.04-2.70 for high exposure), simazine (OR = 1.89; 95% CI: 1.08-3.33 for high exposure), and lindane (OR = 2.02; 95% CI: 1.15-3.55 for high exposure) is in keeping with those previously reported in the literature. We also observed a significant excess risk for several active ingredients that have not been previously reported in the literature such as dichlone, dinoseb amine, malathion, endosulfan, 2,4-D, 2,4-DB, and carbaryl. Some findings in our study were not consistent with those reported in the literature, including captan, dicamba, and diazinon. It is possible that these findings showed a real association and the inconsistencies reflected differences of characteristics between study populations.

Nutrients and Risk of Prostate Cancer

Article

Jul 2010
NUTR CANCER

This study assesses the association between intake of protein, fats, cholesterol, and carbohydrates and the risk of prostate cancer (PCa). Between 1994 and 1997, in 8 Canadian provinces, mailed questionnaires were completed by 1,797 incident, histologically confirmed cases of PCa and 2,547 population controls. Information was collected on socioeconomic status, lifestyle habits, and diet. A 69-item food frequency questionnaire provided data on eating habits 2 yr before the study. Odds ratios (ORs) and 95% confidence intervals (CIs) were computed using unconditional logistic regression, including terms for sociodemographic factors, body mass index, alcohol, and total energy intake. Intake of trans fat was associated with the risk of PCa; the OR for the highest vs. the lowest quartile was 1.45 (95% CI = 1.16-1.81); the association was apparently stronger in subjects aged less than 65, normal weight men, and ever smokers. An increased risk was also observed with increasing intake of sucrose and disaccharides. In contrast, men in the highest quartile of cholesterol intake were at lower risk of PCa. No association was found with intake of total proteins, total fat, monounsaturated fats, polyunsaturated fats, monosaccharides, and total carbohydrates. The findings provide evidence that a diet low in trans fat could reduce PCa risk.

Alcohol drinking and pancreatic cancer risk: A meta-analysis of the dose-risk relation

Article

Mar 2010
INT J CANCER

In order to provide a more precise quantification of the association between alcohol consumption and pancreatic cancer risk, we performed a meta-analysis of relevant dose-risk results. We conducted a PubMed search of all case-control (N=21) and cohort (N=11) studies published up to March 2009. We computed summary relative risk (RR) estimates using either fixed- or, in the presence of heterogeneity, random-effects models. The pooled RR was 0.92 (95% confidence interval, 95% CI, 0.86-0.97) for <3 drinks/day and 1.22 (95% CI, 1.12-1.34) for > or = 3 drinks/day. The increased risk for heavy drinking was similar in women and men, but apparently stronger in cohort studies (RR=1.29), in studies with high quality index (RR=1.30), and did not appear to be explained by residual confounding by either history of pancreatitis or tobacco smoking. This meta-analysis provides strong evidence for the absence of a role of moderate drinking in pancreatic carcinogenesis, coupled to an increased risk for heavy alcohol drinking. Given the moderate increase in risk and the low prevalence of heavy drinkers in most populations, alcohol appears to be responsible only for a small fraction of all pancreatic cancers.

Alcohol consumption and prostate cancer risk: A meta-analysis of the dose-risk relation

Abstract

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