Sakineh Shab Bidar

Tehran University of Medical Sciences | TUMS · Department of Community Nutrition

Chrono-nutrition is an emerging field that examines how the frequency and timing of meals impact health. Previous research shows inconsistency in the relationship between chrono-nutritional components and cardiometabolic health. We investigated cross-sectional associations between these components and cardiometabolic health in 825 Iranian adults ag...

Background Circadian eating patterns and chrono-nutrition may influence obesity and disease incidence. Thus, this study aimed to assess the mediating role of obesity in the relationship between meal-specific dietary patterns (DPs), chrono-nutritional components, and cardiometabolic risk using structural equation modeling (SEM). Methods A cross-sec...

The impact of vitamin D supplementation on depressive symptoms remains uncertain. This study aimed to investigate the dose-dependent effects of vitamin D supplementation on depressive and anxiety symptoms in adults. We systematically searched PubMed, Scopus, and Web of Science up to December 2022 to identify randomized controlled trials evaluating...

Background There is a lack of clarity on the comparative effects of different beverages on weight loss in adults. Objective This study aimed at quantifying and ranking the effects of different beverages on weight loss. Methods We searched PubMed, Scopus, and Web of Science up to January 2023. We included randomized trials evaluating the comparati...

Mental health (MH) disorders are one of the most prevalent global public health issues for a significant portion of the population. The aim of this study was to investigate the relationship between the mealtime distribution of macronutrients and MH in Iranian adults. We used a convenience sampling technique to perform this cross-sectional study. Th...

We aimed at quantifying the effects of different tea and coffee on weight loss in adults. We searched PubMed, Scopus, CENTRAL and grey literature sources to July 2024. The study excluded cross-over trials without washout period, those in critically ill patients, pregnant or breast-feeding women, multicomponent interventions and active control group...

Background No study was conducted to investigate the association between principal component (PCA) derived meal-based dietary patterns and odds of major depressive disorder. We aimed to explore the association between major dietary patterns at breakfast and oddsof major depressive disorder (MDD). Methods A total of 200 drug-free patients with MDD...

Background Studies have shown that plant-based foods have a protective effect against gestational diabetes (GDM). We examined the association between plant-based dietary patterns and the risk of GDM in a sample of Iranian adults. Methods We enrolled 635 pregnant women for the present study. Dietary intakes were evaluated by using a 90-item food fr...

Background Studying the dietary antioxidant quality (DAQ) score as a modifiable factor to lessen the negative effects of obesity on health is vital due to the rising global trend of obesity. Therefore, this study aimed to determine how adult obesity and meal-based DAQ scores correlate. Materials and Methods A cross-sectional study including 850 me...

Background Understanding the role of social capital in adherence to the Mediterranean diet can inform interventions to promote healthier eating habits in Iranian adults. Methods This was a cross-sectional study. Dietary intake was assessed using a 168-item semi-quantitative food frequency questionnaire. Adherence to the Mediterranean diet was meas...

Aim To assess the impact of intermittent fasting, with or without probiotic supplementation, versus a calorie‐restricted diet on anthropometric measures, metabolic status and gonadal variables in women with polycystic ovary syndrome (PCOS). Methods This is a randomized, placebo‐controlled, parallel‐arm clinical trial. The effects of the 14:10 earl...

Background: Timing, frequency, and regularity as chrono-nutrition are emerging fields in nutritional epidemiology. The authors investigated the association of irregularity in energy intake, frequency, and overnight fasting with nutrient quality and health. Methods: Iranian adults who attended the health center of Tehran participated in this cross-s...

Background Type 2 diabetes mellitus (T2DM) is often linked to chronic inflammation, which can be influenced by both lifestyle and dietary choices. However, the relationship between the inflammatory potential of diet and lifestyle factors and the risk of developing T2DM remains unclear. The present study aimed to investigate the associations of the...

Background and Objectives: Bread, as a staple food, is a significant part of food waste and a potential threat to food security. This study aims to systematically investigate and quantify the global extent of bread waste and its reasons. Materials and Methods: We searched PubMed, EMBASE, Web of Science and Scopus databases from 1990 to February 202...

Background Predictive equations have been considered as a practical approach for estimating resting energy expenditure (REE) across multiple populations, but their accuracy for each community remains to be determined. Thus, the purposes of this study were to determine the validity of REE predictive equations and to develop a new REE predictive equa...

Background. The Gaussian graphical model (GGM) is a new approach that has recently gained attention for identifying dietary patterns. It examines the connections between different food groups and how they are consumed together. The aim of our study was to investigate the link between dietary networks derived from GGM and the odds of major depressiv...

Context Intermittent fasting (IF) is a diet strategy with alternate intervals of calorie reduction and normal eating. Despite its beneficial effects on weight loss and cardiometabolic risk factors, the effect of IF on liver function tests (LFTs) remains unclear. Objective This study aimed to investigate the effect of IF on LFTs through a systemati...

Background/Objectives There is uncertainty about the optimum dose of omega-3 fatty acids for anxiety symptoms. We aimed to find the dose-dependent effect of omega-3 supplementation on anxiety symptoms. Methods We systematically reviewed PubMed, Scopus, and Web of Science until December 2022 to find randomized trials that assessed the effects of om...

Background Obesity and mental health issues are two of the most prevalent global public health issues for a significant portion of people. The purpose of this study was to investigate the relationship between obesity indicators and mental health in Tehran-dwelling Iranian adults. Methods We conducted a cross-sectional study on healthy Iranian adul...

Objectives We aimed to validate dietary assessment methods against the gold standard, doubly labeled water (DLW), for estimating total energy intake (TEI). Methods PubMed, Scopus, Web of Science, and Google Scholar databases were searched until May 2023. Inclusion criteria encompassed studies involving participants aged 1–18 years, employing dieta...

Background Self-rated health (SRH) has been identified in many studies as a valid predictor of mortality and healthcare utilization. There is limited research on SRH and dietary intake. This study aimed to investigate the association between healthy eating index (HEI) and SRH in adults living in Tehran. Methods This cross-sectional study was carri...

Aim The aim of this network meta-analysis (NMA) was to investigate the effects of different dietary supplements on the mortality and clinical status of adults with sepsis. Methods We searched PubMed, EMBASE, and the Cochrane Library Central Register of Controlled Trials until February 2023. The inclusion criteria were: 1) randomized controlled tria...

Purpose: L-carnitine supplementation has been recommended to improve cardiometabolic health markers in diabetic patients. Our purpose was to assess the dose-dependent effects of l-carnitine supplementation on cardiometabolic risk factors in patients with type 2 diabetes. Methods: PubMed/Medline, Scopus, and Web of Science were searched until May 2...

Methyl donor micronutrients might affect muscle strength via DNA methylation. We aimed to evaluate the combined relationship of dietary methyl donor micronutrients containing Betaine, Choline, Methionine, Vitamin B12, Vitamin B6, and Folate on muscle strength. This cross-sectional study was conducted on 267 subjects including 113 men and 154 women....

Background Rheumatoid arthritis (RA) is known as a chronic systemic autoimmune disorder that primarily targets synovial joints, and may cause pain and functional limitations. Studies show diet can have beneficial effects on symptoms and oxidative stress of this disease. Intermittent fasting (IF) is a dietary approach with cycles of fasting and inta...

To investigate the association of red and processed meat intake with the risk of gestational diabetes (GDM) in Iranian mothers. A total of 635 pregnant mothers were included. Dietary intake was assessed by a 90-item food frequency questionnaire during the first trimester of pregnancy. Intakes of total red meat, unprocessed red meat, and processed m...

Through modulating effects on the gut-brain axis, probiotics are an effective adjuvant treatment for Alzheimer’s disease (AD), one of our century’s most important medical care challenges (Agahi et al. Front Neurol 9:662, 2018). This trial aimed to examine the effects of two different single-strain probiotics on oxidative stress and inflammation in...

Objectives: Despite controversies, no study has systematically summarized findings from earlier studies on the effect of berberine (BBR)–silymarin on liver enzymes. Therefore, the current systematic review and meta-analysis aimed to investigate the effect of berberis aristate and silybum marianum on alanine aminotransferase (ALT) and aspartate amin...

Background It has been recently reported that lipoprotein-associated phospholipase A2 (Lp-PLA2) may predict the risk of cardiovascular disease. The effect of multi-strain probiotics on Lp-PLA2 in patients with type 2 diabetes is still not clear. Aims This study aimed to determine the effect of multi-strain probiotic supplementation on lipoprotein-...

Aims To compare the effects of probiotics, prebiotics, and synbiotics for type 2 diabetes (T2D) management. Methods We searched PubMed, Scopus, CENTRAL, and grey literature sources to December 2022 for randomized trials of the impacts of probiotics, prebiotics, or synbiotics in patients with T2D. We performed network meta-analyses with a Bayesian...

Introduction Carbohydrate-restricted diets are one of the most effective dietary interventions for weight loss. However, the optimum carbohydrate intake for implementing the most effective weight-loss interventions is still being discussed. We aimed to determine the optimum carbohydrate intake for short- and long-term weight loss in adults with ove...

We aimed to conduct a comprehensive review of the association between dietary fiber and the risk of mortality. We did a systematic search in PubMed, Scopus, and Web of Science up to November 2022 to find prospective cohort studies of the relationship between total and subtypes of dietary fiber and the risk of all-cause, cardiovascular (CVD), and ca...

Introduction Polycystic ovary syndrome (PCOS) is one of the most common endocrine disorders in females characterized by ovulatory dysfunction, hyperandrogenism, and other metabolic disorders. Both intermittent fasting and specific probiotics have been suggested to help improve patients with PCOS through changes in gut microbial composition, circadi...

We aimed to evaluate the dose-dependent effects of aerobic exercise on systolic (SBP) and diastolic blood pressure (DBP) and haemodynamic factors in adults with hypertension. PubMed, Scopus, and Web of Science were searched to April 2022 for randomized trials of aerobic exercise in adults with hypertension. We conducted a random-effects meta-analys...

Background Synbiotics, refer to a combination of probiotics and prebiotics in a form of synergism that beneficially affect the host’s health by alternating the composition and/or function of the gut microbiota. Numerous meta-analyses of randomized clinical trials have proven that pro, pre-, and synbiotics supplementation has health outcomes in wome...

Background: Synbiotics, refer to a combination of probiotics and prebiotics in a form of synergism that beneficially affect the host’s health by alternating the composition and/or function of the gut microbiota. Numerous metaanalyses of randomized clinical trials have proven that pro, pre-, and synbiotics supplementation has health outcomes in wome...

We aimed to investigate the effectiveness of omega-3 fatty acids supplementation on the risk of developing depression, depressive symptoms and remission of depression. We searched PubMed, Scopus, and Web of Science from inception to December 2022 to find randomized trials of omega-3 fatty acids supplementation in adults. We conducted random-effects...

The present study aimed to investigate the association between the empirical dietary inflammatory index (EDII) and lifestyle inflammatory score (LIS) with general and abdominal obesity in Iranian adults using data from the Yazd Health study (YaHS). This cross‐sectional study was conducted using the information of participants of the YaHS study. The...

Background Limited data is available on the association between adherence to the Mediterranean diet during early pregnancy and risk of gestational diabetes (GDM) in countries located in the Middle East, one of the regions with the highest prevalence of GDM. Methods A total of 647 pregnant mothers were included in the present prospective birth coho...

There is no research on the comparative effects of nutraceuticals on weight loss in adults with overweight or obesity. This study aimed at quantifying and ranking the effects of different nutraceuticals on weight loss. We searched PubMed, Scopus, and Web of Science to November 2022. We included randomized trials evaluating the comparative effects o...

We aimed to review the association of dietary fats and risk of coronary events in adults. We searched PubMed, Embase, CENTRAL, Scopus, and Web of Sciences to April 2022 for prospective cohorts and randomized trials investigating the association of dietary intake and biomarkers of fats and fatty acid interventions and the risk of coronary events. We...

Purpose: To investigate the potential relationship between diet quality, represented by the Mediterranean diet score, during early pregnancy and behavioral, mood, and cognitive development in children under 1 year of age in a prospective cohort study in Iran. Methods: 658 Iranian pregnant women and their infants participated in this prospective...

Objective To compare the characteristics of habitual and meal-specific dietary patterns identified by the latent class analysis (LCA) and confirmatory factor analysis (CFA). Methods Participants included 778 adults that were selected for the present cross-sectional study form the local health care centers in Tehran, Iran. Dietary intake was evaluat...

Background: Little is known about the association between dietary patterns and odds of migraine. We aimed to investigate the association between posteriori dietary patterns and migraine odds and migraine-related outcomes using principal component analysis (PCA). Methods: A total of 500 participants enrolled in this age- and sex-matched case-control...

Background: Evidence is uncertain about the association between serum 25-hydroxyvitamin D (25(OH)D) concentration and health outcomes in people with type 2 diabetes. Objective: We aimed to assess the association between vitamin D status and all-cause mortality and cardiovascular disease in people with type 2 diabetes. Methods: We did a systema...

Background No study has examined the combined association of dietary inflammatory index (DII) of the diet and resting metabolic rate (RMR) on cardiorespiratory fitness (CRF). Therefore, we investigated the combined association between DII and RMR on CRF. Methods This cross-sectional study was conducted on 270 adult subjects. The DII was calculated...

Background: Previous studies have shown that insulin directly affects the risk of type 2 diabetes mellitus (T2DM) but the relationship between insulinaemic potential of diet and lifestyle and the T2DM risk is still unknown. Accordingly, we aimed to investigate the relationship between the insulinaemic potential of diet and lifestyle based on indic...

Background and Aims: Studies suggest a potential link between ideal cardiovascular health (CVH) and the risk of type 2 diabetes (T2D). However, systematic reviews are lacking to pool these data and present a balanced review about this association. Methods and Results: We did a systematic search in PubMed/Medline, Web of Sciences, and Scopus from i...

We aimed to investigate the association of main meals' specific protein intake with cardiometabolic risk factors including general and abdominal obesity, serum lipid profile, and blood pressure. This cross-sectional study was conducted on 850 subjects aged 20-59 years. Dietary intakes were assessed by completing three 24-hour recalls and the protei...

There is no systematic review investigating the utility of Diffusion tensor-based tractography findings for treating brain arteriovenous malformations (bAVMs). This systematic review aims to investigate the outcomes following bAVM treatment when tractography data is incorporated into treatment planning. PubMed/MEDLINE, Scopus, and Cochrane Library,...

Current research emphasizes the habitual dietary pattern without differentiating eating occasions. We aimed to assess meal-specific dietary patterns and insulin resistance indicators. This cross-sectional study was conducted on 825 Iranian adults. Dietary data were recorded by three 24-h dietary recalls. Dietary patterns were identified using princ...

Objective: The COVID-19 pandemic has caused serious consequences for global health and economy. The important question is whether the level of physical activity might influence the risk of COVID-19 incidence or clinical outcomes, including the severity or mortality of infected patients. The objective of this systematic review and meta-analysis is...

We aimed to identify temporal patterns of energy intake and investigate their association with adiposity. We performed a cross-sectional study of 775 adults in Iran. Information about eating occasions across the day was collected by three 24-h dietary recalls. Latent class analysis (LCA) was used to identify temporal eating patterns based on whethe...

Objective: Evidence on the relationship between sleep duration and irregularity in daily energy intake with diet quality in Iranian adults is scarce. We aimed to evaluate the association of sleep duration with diet quality and irregularity in daily energy intake. Design: This is s cross-sectional study. Setting: The study was carried in health...

Background Limited evidence is available about the dose-dependent effects of calorie restriction in patients with type 2 diabetes. Objective To gather available evidence on the effect of calorie restriction on management of type 2 diabetes. Methods We systematically searched PubMed, Scopus, CENTRAL, Web of Science, and gray literature to November 2...

Background Metabolic syndrome (MetS) is a common global issue linked to the quality of one’s eating occasions. The current cross-sectional study evaluates the association between a novel index, the Main Meal Quality Index (MMQI), and MetS among Iranian adults. Methods A total of 824 men and women were recruited, and a 24-hour dietary recall assess...

Background Breast cancer (BC) is the fifth most prevalent cause of cancer-related deaths in Iran. Given that the role of whole-diet on cancer risk is important, this study aimed to assess the association of MedDQI and breast cancer risk. Methods This hospital-based case-control study was performed on 150 women with pathologically confirmed breast...

Background/objectives Plant-based dietary patterns are becoming more popular worldwide. We aimed to examine the relationship between plant-based dietary patterns and the risk of inadequate or excessive gestational weight gain (GWG) in Iranian pregnant women. Methods We prospectively followed 657 pregnant women in Iran. Adherence to the plant-based...

Purpose: To assess the association between the diabetes risk reduction diet score (DRRD) and the odds of breast cancer (BC). Methods: During this hospital-based case-control study we included 149 newly diagnosed cases of BC and 150 controls matched by age. All cases were patients with pathologically confirmed BC, with no history of any form of o...

Background Some evidence shows that meal timing is associated with diet quality. We aimed to investigate the relationship between meal timing and breakfast quality in a sample of Iranian adults. Methods This cross-sectional study was conducted on 850 men and women living in Tehran, Iran. Dietary data was recorded by three non-consecutive 24-h diet...

Background This study aimed to evaluate the association of meals-specific food-based dietary inflammatory index (FDII), with cardiovascular (CVD) risk factors and inflammation among Iranian adults. Methods In this cross-sectional study, we recruited 816 participants living in Tehran via two-staged cluster sampling. Three non-consecutive 24-h dieta...

Stroke and associated disabilities are ranked as one of the first causes of death and impaired mobility and cogitation in the world. Similar to other cardiovascular diseases, high blood pressure is the leading risk factor for stroke death and disability. High salt intake has long been recognized as the most important dietary risk factor for high bl...

Background and objective Due to the growing global trend of obesity, it is necessary to study the diet quality as a modifiable factor to reduce the dangerous consequences of obesity. Therefore, the aim of this study was to evaluate the association between meal-based diet quality index-international (DQI-I) with obesity in adults. Methods This cros...

Vitamin A is an anti-oxidant which has been presumed to act as an anti-infective vitamin in many studies. This study aimed to evaluate the association between vitamin A supplementation and c-reactive protein (CRP), tumor necrosis factor-alpha (TNF-α), and interleukin 6 (IL-6) levels in randomized control trials (RCTs) studies on adults. A systemati...

Purpose This study aimed at quantifying and ranking the effects of different foods or food groups on weight loss. Methods We searched PubMed, Scopus, Cochrane Central Register of Controlled Trials, and Embase to April 2021. We included randomized trials evaluating the comparative effects of two or more food groups, or compared a food group against...

Diet and lifestyle as modifiable factors play an effective role in muscle strength and muscle endurance. In addition, inflammatory reactions may have an association with the etiology of a a lower muscle strength and muscle endurance. We aimed to investigate the association of dietary and lifestyle inflammation scores (DLIS) with muscle strength and...

We performed a systematic review and dose-response meta-analysis of randomized trials on the effects of olive oil consumption on blood lipids in adults. A systematic search was performed in PubMed, Scopus, and Web of Science databases until May 2021. Randomized controlled trials (RCT) evaluating the effect of olive oil intake on serum total cholest...

Probiotics have been suggested as an effective adjuvant treatment for Alzheimer’s disease (AD) due to their modulating effect on the gut microbiota, which may affect the gut-brain axis. Therefore, we aimed to evaluate the effects of two different single-strain probiotics on cognition, physical activity, and anxiety in subjects with mild and moderat...

Probiotics have been suggested as an effective adjuvant treatment for Alzheimer’s disease (AD) due to their modulating effect on the gut microbiota, which may affect the gut-brain axis. Therefore, we aimed to evaluate the effects of two different single-strain probiotics on cognition, physical activity, and anxiety in subjects with mild and moderat...

This study was conducted to evaluate the associations between dietary diversity score (DDS) and cardiovascular risk factors in this population. In this cross-sectional study, 187 patients, aged 18-65 years with pemphigus vulgaris were included. DDS was assessed by a 24-hour dietary recall method. Anthropometric measures and biochemical parameters a...

Background Inflammatory-related chronic diseases are increasing in Iran with high consumption of a diet containing pro-inflammatory potential and a sedentary lifestyle. The empirical dietary inflammatory index (EDII) was developed as a tool to assess dietary effects on systemic inflammation. We examined the hypot