Study shows association between breastfeeding and reduced risk of aggressive breast cancer

A large international study shows that breastfeeding is associated with a lower risk of developing an aggressive form of breast cancer called hormone-receptor negative. This new combined evidence shows the risk was reduced by up to 20% in women who breastfed. Published in Annals of Oncology, this breastfeeding meta-analysis is a collaboration between Breastcancer.org; Icahn School of Medicine at Mount Sinai; Washington University, St. Louis; and the American Cancer Society.