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 results also indicated that having three or more children without breast-feeding was associated with an increased risk for ER/PR-negative breast cancer. ER/PR-negative breast cancer often affects younger women and has a poor prognosis.  READ FULL PRESS RELEASE: http://www.eurekalert.org/pub_releases/2012-10/cums-ssb101812.php

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