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Published in: Breast Cancer Research and Treatment 1/2019

01-07-2019 | Breast Cancer | Review

The relation between stressful life events and breast cancer: a systematic review and meta-analysis of cohort studies

Published in: Breast Cancer Research and Treatment | Issue 1/2019

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Abstract

Purpose

Breast cancer is the most common cancer among women with high rate of mortality. This systematic review and meta-analysis was conducted to investigate the relation between stressful life events and breast cancer.

Methods

We searched PubMed, Scopus, ScienceDirect, and Google scholar databases from their inception until June 2018. The keywords and phrases we used in the search were (life events AND stress AND breast cancer OR neoplasm) to identify potentially relevant cohort studies that reported relative risk estimates and confidence intervals of this association. Pooled Risk ratio and 95% confidence intervals (CIs) were calculated using random effects model.

Results

Out of 168 potentially relevant publications, 11 documents met the inclusion criteria. The results showed that history of stressful life events slightly increases the risk of breast cancer [pooled Risk Ratio: 1.11 (95% CI 1.03 to 1.19)].

Conclusions

History of stressful life events could be associated with a moderate increase in the risk of breast cancer. We advise that receiving psychological and counseling services after occurrence of stressful life events of women should be taken seriously.
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Metadata
Title
The relation between stressful life events and breast cancer: a systematic review and meta-analysis of cohort studies
Publication date
01-07-2019
Published in
Breast Cancer Research and Treatment / Issue 1/2019
Print ISSN: 0167-6806
Electronic ISSN: 1573-7217
DOI
https://doi.org/10.1007/s10549-019-05231-x

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