Newspapers reported on a prospective cohort study of more than 40,000 Swedish men that found those who exercised moderately for at least 60 minutes a day reduced their risk of cancer, also in men who have cancer, 30 minutes a day of moderate exercise improved their chances of survival by 33%.
The researchers said the findings ‘may have major public health implications in the prevention and treatment of malignancies’ but the results require confirmation.
Critics say the study did not take into account the effect of diet that can influence their risk of cancer and it is possible that the men who exercised more also had healthier diets.
Source: "Association of physical activity with cancer incidence, mortality, and survival: a population-based study of men" British Journal of Cancer (2008) 98, 1864-1869.
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