Postmenopausal women receiving estrogen plus progestin at increased risk of breast ca

[News]

Researchers have identified how the hormones progesterone and estrogen interact to increase cell growth in normal mammary cells and mammary cancers, a novel finding that may explain why postmenopausal women receiving hormone replacement therapy with estrogen plus progestin are at increased risk of breast cancer.

More... (http://www.news-medical.net/news/20110119/Postmenopausal-women-receiving-estrogen-plus-progestin-at-increased-risk-of-breast-cancer.aspx)