Researchers in Australia have found that masturbation done frequently may cut men's risk of getting prostate cancer. The researchers believe that carcinogens may accumulate in a man's prostate if not ejaculated on a regualr basis.
The researchers studied more than 1,000 men who had gotten prostate cancer, and 1,250 who had not. They found that those between 20 and 50 years old who ejaculated regularly were one-third less likely to have prostate cancer develop.
The prostate creates a fluid used in ejaculating, which activates sperm and keeps them from bonding together. Animal studies show that carcinogens can be stored in the prostate and that frequent ejaculation tends to "flush out" these fluids.