Does breast-feeding either cause or prevent breast cancer?
Some studies have found that breast-feeding may reduce the risk of breast cancer. The benefit appears to be related to how long the woman breast-feeds. Studies that show benefit tend to be those in societies where a woman may have several children, breast-feed each for two years, with a total breast-feeding time approaching ten years. Studies that compare women who didn’t breast-feed at all, to those who did for a few months, generally do not show a breast cancer reduction. However, the baby may certainly benefit from a few months of breast-feeding.
