Does Masturbation Affect Fertility? Doctor Answers Masturbation won't reduce sperm count or cause impotence, these are just myths. A medical expert breaks down the truth: it's a normal and healthy part of Does Masturbation Cause Male Infertility? Can Excessive Masturbation Lead to Infertility? I Ovoria Masturbation and nightfall do NOT cause infertility., This is a common myth medically, these natural processes do not affect sperm production or fertility., The real causes of male infertility