Cut risk of breast cancer by moving more
A recent study of more than 30,000 post-menopausal women showed that strenuous activity -- ranging from housework such as scrubbing floors to running -- protected against breast cancer even among those who do not have a higher risk.
The effect was clearest among lean women. After 11 years, the researchers found that overall the volunteers who exercised the most were 13 percent less likely to have developed breast cancer.
"We know that being overweight puts women at increased risk of breast cancer," said Michael Leitzmann, who led the study while at the National Cancer Institute of the U.S. National Institutes of Health.
"What our study shows is that even among women without this increased risk, if they exercise they can get some benefit."
There have been a number of studies demonstrating that regular strenuous exercise can help people avoid heart disease, cancer and a range of other conditions. One possible mechanism of action to thwart breast cancer: the leaner you are, the less circulating estrogen you have in your body.
Kim Dalzell, PhD, RD, LD