christians: do you beleive that masturbation is a sin??? (not vulgar)?

Question

because for men anyways it has been proven to reduce the risk of prostate cancer. and the syndrom called "blue balls" can be releived and if not then the pressure in the long run can cause damage to the testicles.

Answer 1

"blue balls" is an absolute myth, I'd also question the other findings you quote.

Adultery is defined as sex (even in your mind) with anyone who is not your spouse.

Sex with self is not sex with spouse, right? It's adultery.