Exercise when young may cut breast cancer : Booster Shots : Los Angeles Times

Exercise when young may cut breast cancer : Booster Shots : Los Angeles Times:

"Exercise — do it early and often.

Women who exercise regularly between ages 12 and 35 may cut their risk of breast cancer by 23%, according to information gleaned from 65,000 women enrolled in the Nurses Health Study II, a prospective study of registered nurses"