Injectable form of progestin may increase breast cancer risk in young women

[News]

The first large-scale U.S.-based study to evaluate the link between an injectable form of progestin-only birth control and breast cancer risk in young women has found that recent use of a year or more doubles the risk.

More... (http://www.news-medical.net/news/20120405/Injectable-form-of-progestin-may-increase-breast-cancer-risk-in-young-women.aspx)