Lifetime Physical Activity may reduce Prostate Cancer Incidence and Mortality

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A prospective study published in the British Journal of Cancer (October 27) concluded that men who are not sitting for most of the time during work or occupational activities and who walk or bicycle more than 30 minutes daily during their adult life have a reduced incidence of prostate cancer. In the study 45,887 men aged 45 to 79 were followed for 10 years. There were 2735 cases of prostate cancer and 190 deaths. There was an inverse relationship between levels of physical activity and prostate cancer. Those in the top quartile of lifetime physical activity decreased by 18% (95% confidence level) compared with those in the lowest quartile their risk of prostate cancer. Men who sat at work half of the time had a 20% reduction in prostate cancer risk over those who sat most of the time. There was also an inverse relationship between the incidence of prostate cancer among those with average physical activity at work and walking and bicycling duration. Thus, physical activity seems important for reducing the risk of prostate cancer.

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