Exercise associated with reduced risk of breast cancer in African American women — ScienceDaily
In a large prospective study of the health of black women, the Black Women’s Health Study (BWHS), researchers collected information about exercise habits, such as time spent exercising per week and type of exercise. They followed more than 44,000 African American women over a span of 16 years and observed whether they developed breast cancer. They found that women who exercised vigorously for seven or more hours each week were 25 percent less likely to develop breast cancer, compared to those who exercised less than one hour each week. …