Daily exercise can help reduce the risk of developing prostate cancer, according to a new study.

According to research by the Harvard School of Public Health, five or more hours of vigorous activity a week can help cut the risk of dying of the disease by 35 per cent, and just 15 minutes of exercise a day can help people already suffering from the cancer to beat it.

Stacey Kenfield, epidemiology research associate at the school and lead author of the study, said: "We saw benefits at very attainable levels of activity. The results suggest that men with prostate cancer should do some physical activity for their overall health."