How much does breastfeeding lower your risk of breast cancer? In a study by the Collaborative Group on Hormonal Factors in Breast Cancer, researchers found that for every 12 months a woman breastfed, her risk of breast cancer decreased by 4.3%. The study compared mothers who breastfed to those who didn’t.
Why does breastfeeding lower risk of breast cancer? Breastfeeding extends these hormonal changes. As a result, women who breastfeed aren’t exposed to as many hormones over their lifetimes as women who don’t. Since overexposure to estrogen and other hormones is linked to breast cancer risk, breastfeeding lowers breast cancer risk.
Is breastfeeding protective of breast cancer? Breastfeeding. Breastfeeding lowers the risk of developing breast cancer, particularly if you have your children when you are younger. The longer you breastfeed the more the risk is reduced.
What increases your chance of breast cancer? A woman’s risk for breast cancer is higher if she has a mother, sister, or daughter (first-degree relative) or multiple family members on either her mother’s or father’s side of the family who have had breast or ovarian cancer. Having a first-degree male relative with breast cancer also raises a woman’s risk.