Exercise and cancer

We all know that exercise is a Good Thing – for cardiovascular health, for weight control, to reduce risks of diabetes and metabolic syndrome, and even to ward off Alzheimer's disease and dementia (see here, here, here, here, here).

Now there is recent research that exercise might be beneficial in reducing risks of various kinds of cancer:

href="http://www.brightsurf.com/news/headlines/27986/Exercise_can_reduce_a_smoker%E2%80%99s_lung_cancer_risk_but_quitting_smoking_is_still_most_important.html">Exercise can reduce a smoker’s lung cancer risk

Exercise may reduce smokers' lung cancer risk

Recreational workouts may ward off breast cancer

Hour of daily exercise cuts bowel cancer risk