Journal Watch: PCOS does not increase risk of Breast Cancer

The association between polycystic ovary syndrome and breast cancer: a meta-analysis
Fatemeh Shobeiri and Ensiyeh Jenabi

Obstet Gynecol Sci. 2016 Sep; 59(5): 367–372.
Published online 2016 Sep 13. doi: 10.5468/ogs.2016.59.5.367 PMCID: PMC5028643

"This is the first meta-analysis of PCOS and breast cancer that included cohort studies and the meta-analysis results indicated that PCOS not was associated with an increased risk of the breast cancer. Obesity increases the risk of breast, endometrial and ovarian cancers. In view of the reproductive characteristics and the high prevalence of obesity among women with PCOS we would have expected the association with risk the breast cancer. However, this meta-analysis indicated that PCOS not associated with an increased risk of the breast cancer."