Lifetime Physical Activity and Breast Cancer Risk in Pre- and Postmenopausal Women.


Dorn J, et al.




Medicine & Science in Sports & Exercise


A recent study examined the possible position that life-long exercise plays in the risk of breast cancer, before and after menopause. For this investigation, researchers recruited 301 pre-menopausal cases of breast cancer and 439 post-menopausal cases. Each of these groups had a healthy control group. All women involved were between the ages of 40 and 85 years. Physical activity was recorded from the women, from the age of 16 years and up. The authors found that strenuous exercise was associated with a reduced risk of breast cancer, and this was seen more in postmenopausal women than in premenopausal women. The authors concluded that, “effects appear strongest for those active at least 20 yr prior and among postmenopausal women who were consistently active throughout their lifetime.”