Breastfeeding for longer than 6 months can lower breast cancer mortality risk

"A new study of women 20 years after undergoing surgery for primary breast cancer shows that breastfeeding for longer than 6 months is associated with a better survival rate. Among breast cancer survivors who breastfed for >6 months, both breast cancer mortality and overall mortality risk were less after 20 years, according to the study published in Breastfeeding Medicine, the official journal of the Academy of Breastfeeding Medicine published by Mary Ann Liebert, Inc., publishers."