Exercise after age 30 may curb breast cancer risk

After age 30, exercising for more than an hour a week may help cut a woman's chances of developing breast cancer, according to a study presented at the American College of Sports Medicine's annual meeting in Seattle.

The odds of developing breast cancer did not appear to change in relation to exercise levels between ages 10 and 30, but women above age 30 significantly cut their chances of developing breast cancer if they were more active, the researchers found.