Breastfeeding Reduces Risk of ER-/PR- Breast Cancer

Risk of estrogen receptor (ER)-negative, progesterone receptor (PR)-negative breast cancer is reduced in women who breastfeed and use of oral contraceptives (OCs) does not raise the risk of the disease. So say findings from a population-based study presented at the 11th Annual AACR International Conference on Frontiers in Cancer Prevention Research.