In fact, this was a confirmation of a previous theory sustaining that that regular orgasms may flush out cancer-causing chemicals in the prostate. The new study is the largest to date on the frequency of ejaculation and prostate cancer, including almost 32,000 healthy men for 18 years. Even a strange conclusion was issued: if celibacy doubles the risk of the disease, the study also revealed that men who have slept with more than 20 women reduced their chances of getting the most aggressive tumors by 19 per cent. In other words, the more frequently a man ejaculated throughout his life, the lower his risk of prostate cancer. Dr Jennifer Rider, of Harvard Medical School and Brigham and Women’s Hospital, said the results are ‘particularly encouraging.’