Masturbation may prevent prostate cancer

Frequent masturbation may help men cut their risk of contracting
prostate cancer, Australian researchers have found. It is believed that
carcinogens may build up in the prostate if men do not ejaculate
regularly, BBC News reported on Wednesday. The researchers surveyed
more than 1,000 men who had developed prostate cancer, and 1,250 men
who had not. They found that men who had ejaculated the most between
the ages of 20 and 50 were the least likely to get cancer. Men who
ejaculated more than five times each week were a third less likely to
develop prostate cancer.

Sexual intercourse may not have the same effect because of the
higher risk of contracting a sexually transmitted disease, which could
in turn raise the risk of cancer.
"Had we been able to remove ejaculations associated with sexual
intercourse, there should have been an even stronger protective effect
of ejaculations," Graham Giles of the Cancer Council Victoria, who led the researchers, said in the article.

The prostate produces a fluid that is incorporated into ejaculation,
which activates sperm and prevents them from sticking together. Studies
on animals have shown that carcinogens like 3-methylchloranthrene can
be harbored in the prostate. Frequent ejaculation encourages the
cancer-inducing fluids to "flush out." (The Advocate)