Is it True? Masturbation can result into impotency or premature ejaculation

Masturbating too often can result into impotency. Is it True?

A myth that says, "masturbating too often can result into impotency or premature ejaculation".
Actually there’s no physical causes that masturbating can result into impotency/premature ejaculation. If there is an impact on sexual function caused by masturbating, it will be just because of psychological factor. Maybe there’s a guilty feeling that causes erectile function on men. So, there’s no physical connection on masturbating and disfunction of sexual organs.