HRT with estrogen alone may reduce risk of breast cancer: Study

[News]

While endogenous estrogen (i.e., estrogen produced by ovaries and by other tissues) does have a well-known carcinogenic impact, hormone replacement therapy (HRT) utilizing estrogen alone (the exogenous estrogen) provides a protective effect in reducing breast cancer risk, according to study results presented at the 33rd Annual CTRC-AACR San Antonio Breast Cancer Symposium, held Dec. 8-12.

More... (http://www.news-medical.net/news/20101210/HRT-with-estrogen-alone-may-reduce-risk-of-breast-cancer-Study.aspx)