Too Much Sitting Raises Odds for Cancer
Nov-07-2011

The hours Americans spend sitting may be increasing their risk for cancer, just as the time they spend exercising can reduce the risk, according to new research.
"For colon and breast cancer we can now say there is convincing evidence that being physically active reduces your risk of developing those two major cancers," said Christine Friedenreich, a senior research epidemiologist at the Alberta Health Services-Cancer Care in Calgary, Canada.
"It's not enough to just meet the physical activity guidelines like doing 150 minutes a week of exercise," she added. "If you are spending the rest of your time sitting, like in front of a computer, that may be a problem."
For colon cancer, regular exercise can reduce the risk up to 35 percent, Friedenreich said. "There's a dose response -- that means more physical activity lowers the risk more," Friedenreich said. The same is true for breast cancer, where exercise can reduce the risk up to 25 percent.
One expert said the new findings do support a connection between sedentary lifestyles and cancer.

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