Exercise reduce colon cancer risk

Here is another study which reinforces the claim of exercise as the best medicine:

According to a review of 52 previous study and published in the British Journal of Cancer by US scientist, active people who exercise are 25% less likely to develop colon cancer. Lead researcher Dr Kathleen Wolin, from the Washington University School of Medicine in St Louis said: "These results give us a very reliable calculation of the positive effect that exercise can have on reducing colon cancer risk. It's very positive to see that exercise has such a clear benefit in reducing cancer risk and we hope it will encourage people to enjoy a healthy active lifestyle as well as treating it as a way to minimise their colon cancer risk."

Source:
http://news.bbc.co.uk/2/hi/health/7883480.stm