Exercise and Breast and Colon Cancer

A recent literature review published online in the Journal of the National Cancer Institute found that physical activity is associated with improved survival in people with breast and colon cancer. The study showed that exercise conferred two things: better quality of life and longevity. In breast cancer the studies show a dose response: the more you exercise, the lower your risk for all-cause or breast cancer mortality. In colon cancer there was no dose response, although exercise did reduce the mortality risk. There wasn't enough data on other cancers to make these pronouncements, although exercise seems to improve quality of life regardless.