One possible explanation for why frequent ejaculation might protect against prostate cancer is that it may help clear potentially cancer-causing substances from the prostate.
overall, ejaculation has many benefits and few risks if done safely. “Sex can be a wonderful part of healthy relationships, and sex and masturbation can have positive psychosocial effects,” she said. “So, there is no downside to increased sex—or masturbation—as long as it is protected sex