Impact of stress on cancer metastasis.

Department of Gynecologic Oncology, UTMD Anderson Cancer Center, 1155 Herman Pressler, Houston, TX 77030, USA.
Future Oncology (Impact Factor: 2.61). 12/2010; 6(12):1863-81. DOI: 10.2217/fon.10.142
Source: PubMed

ABSTRACT The influence of psychosocial factors on the development and progression of cancer has been a longstanding hypothesis since ancient times. In fact, epidemiological and clinical studies over the past 30 years have provided strong evidence for links between chronic stress, depression and social isolation and cancer progression. By contrast, there is only limited evidence for the role of these behavioral factors in cancer initiation. Recent cellular and molecular studies have identified specific signaling pathways that impact cancer growth and metastasis. This article provides an overview of the relationship between psychosocial factors, specifically chronic stress, and cancer progression.

  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: Breast cancer primary prevention is a high research priority due to the high psychological and economic costs. The disease is a multistep process and several risk factors have been recognized. Over the past three decades numerous studies have investigated the association of lifestyle with breast cancer, showing independent effects of various factors. We report here a summary of the present state of knowledge on the role of lifestyle patterns, such as physical activity, diet, smoking, hormone therapy, and experience of psychological stress in the modulation of breast cancer in women, and discuss commonly accepted biological mechanisms hypothesized as responsible for the associations. The findings indicate that regular physical activity of moderate to vigorous intensity is probably linked with the decreased breast cancer risk among postmenopausal females and suggestive for a decrease of the risk in premenopausal women. In contrast, the consumption of high-fat diet, alcohol intake, and use of combined estrogen and synthetic progestagen hormonal therapy may increase the risk. Epidemiological findings dealing with a role of smoking and experience of psychological stress are conflicting.
    Asian Pacific journal of cancer prevention: APJCP 01/2015; 15(24):10543-10555. DOI:10.7314/APJCP.2014.15.24.10543 · 1.50 Impact Factor
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: Studies have demonstrated the potential of the Mindfulness-Based Stress Reduction (MBSR) program to improve the condition of individuals with health outcomes such as hypertension, diabetes, and chronic pain; improve psychological well-being; reduce stress levels; and increase survival among cancer patients. To date, only one study has focused on the effect of long-term meditation on stress, showing a positive protective relationship. However, the relationship between meditation and cancer incidence remains unexplored. The objective of this study was to describe the state-level relationship between MBSR instructors and their practices and county-level health outcomes, including cancer incidence, in the United States. This ecologic study was performed using geospatial mapping and descriptive epidemiology of statewide MBSR characteristics and overall health, mental health state rankings, and age-adjusted cancer incidence rates. Weak to moderate state-level correlations between meditation characteristics and colorectal and cervical cancer incidence were detected, with states with more meditation (e.g., more MBSR teachers per population) correlated with a decreased cancer incidence. A negative correlation was detected between lung & bronchus cancer and years teaching MBSR only. Moderate positive correlations were detected between Hodgkin's Lymphoma and female breast cancer in relation to all meditation characteristics. Statistically significant correlations with moderate coefficients were detected for overall health ranks and all meditation characteristics, most strongly for total number of years teaching MBSR and total number of years of general meditation practice. Our analyses might suggest that a relationship exists between the total number of MBSR teachers per state and the total number of years of general meditation practice per state, and colorectal and cervical cancer incidence. Positive correlations were observed with overall health rankings. Despite this study's limitations, its findings could serve to generate hypotheses and to inform and motivate a new focus on meditation and stress reduction in relation to cancer incidence, with specific relevance to colorectal and cervical cancer.
    BMC Complementary and Alternative Medicine 12/2015; 15(1):545. DOI:10.1186/s12906-015-0545-3 · 1.88 Impact Factor
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: Abstract Collective evidence points to a prominent role of stress in cancer growth and metastasis. Despite these results an etio-pathogenetic role has not been widely accepted. Reasons of controversies are the coexistence in stressed patients of high risk habits, the sample size, the heterogeneity and the retrospective origins of these studies. Experimental data and clinical observations argue about the possibility of an interaction between psychosocial events and tumours. However the number of involved variables and the long period of observation prevent with current technologies the definition of causal versus chaotic sequences of this hypothetical relationship. Psychotherapy may help to face up to stressful events, but its role e remains uncertain. Stress works through sympathetic nervous system and hypothalamic– pituitary–adrenal axis activation, along with related hormones, that have functionally and biologically significant impacts on the tumor microenvironment. This paper collects evidences through the hypothesis of correlation between stress, psychological factors and cancer focusing both on psychology and on molecular biology. Knowledge on stress induced neuroendocrine dynamics in the tumor microenvironment might allow the development of integrated pharmacological and bio-behavioral strategies to create more successful cancer therapies.
    10/2014; Denaro et al. Journal of Cancer Therapeutics & Research 2014, DOI:10.7243/2049-7962-3-6


Available from