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Regular Workouts Protect Breasts

 

What’s ten minutes out of the morning? Thirty more after work? In the amount of time if takes the coffee to brew and the dinner to bake, you could go a long way toward knocking down your breast cancer risk.

 

About four hours of exercise a week may reduce the risk of premenopausal breast cancer by an average of 58 percent, according to a recent study. Researchers compared the lifetime exercise habits of 545 premenopausal women who had breast cancer with 545 premenopausal but cancer-free women. Benefits were even greater for the most active exercisers with children: Their risk was reduced by 72 percent, compared with a 27 percent reduction in risk exercisers without kids.

 

This cancer’s not like lung cancer, where the major risk factor is a controllable one (smoking). Pregnancies, family history, age of menstruation in onset and socioeconomic status are factors that seem to have some play in determining breast cancer risk. And right now, the effects of diet on breast cancer are still controversial, says study leader Leslie Bernstein, Ph. D., professor of preventive medicine at the University of Southern California School of Medicine, Los Angeles, So the idea that exercise may lower risk significantly (if this study is confirmed by future ones)-and that it’s something you can take control of-provides some hope to women seeking anything to help stem the epidemic.

 

The going theory is that exercise diminishes the breast’s exposure to hormones by changing the length of the menstrual cycle or by helping to smooth out its hormonal peaks, says Dr. Bernstein.

 

“Probably the most important finding was that lifetime patterns of exercise appeared to be important,” she says. Those who accrued more hours of exercise-people who started exercising in their teens or early twenties-reduced their risks most significantly. But even women who began substantial exercise programs later were protected.

 

The group with reduced risk in this study engaged in a spectrum of a activities-jogging, racquet sports, swimming, strenuous walking and weight lifting. So researchers can’t yet say whether the biggest benefits might come from resistance training or aerobic training. The bottom line for now is to get moving.

 

“We already know that you ought to maintain a regular exercise program, based on the reduction in risk of heart disease, adult-onset diabetes, osteoporosis and colon cancer.” says Dr. Bernstein, “The possible reduction in breast cancer risk just adds greater fuel to that. 

 

 

 


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