Study shows breastfeeding reduced risk for ER/PR-negative breast cancer

Breast-feeding reduces the risk for estrogen receptor-negative and progesterone receptor-negative breast cancer, according to a study conducted at Columbia University's Mailman School of Public Health. Researchers examined the association between reproductive risk factors — such as the number of children a woman delivers, breast-feeding and oral contraceptive use – and found an increased risk for estrogen receptor- and progesterone receptor- (ER/PR) negative breast cancer in women who do not breast-feed. The paper was presented at the 11th Annual AACR International Conference on Frontiers in Cancer Prevention Research. Read more here.