Exercise and Breast cancer

How Exercise May Lower Breast Cancer Risk

By Alexandra SifferlinMay 08, 20130

KRIS HANKE / GETTY IMAGES

Scientists from the University of Minnesota in St. Paul conducted a study of 391 inactive, healthy, premenopausal women whom they split into two groups. They found that the 179 women in the intervention group, who received 30 minutes of moderate-to-vigorous exercise five times a week for over 16 weeks, showed changes in their estrogen metabolism that could explain the anti-cancer benefits of working out.Breaking a sweat does more for your body than just trim your waistline. Exercise may lower a woman’s risk for breast cancer and researchers are finding out why./.../