口服避孕药与乳腺癌风险增加有关

Among women who had been using hormonal contraceptives for more than five years, a slight risk persisted for at least five years after they stopped, according to the study published Wednesday in the New England Journal of Medicine.

Birth control still linked to breast cancer

Birth control still linked to increased risk of breast cancer

http://edition.cnn.com/2017/12/07/health/hormonal-contraceptive-breast-cancer-intl/index.html