I AGREE 100% WITH SEVERIN76
Hi, your friend is completely wrong. Do not worry about masturbation, it will not negatively affect your health. And the idea that you will affect the health of your future child by masturbating is absolutely absurd and wrong. It seems that your friend is still influenced by some myths about masturbation which were often spread in the past centuries for moral or religious reasons. Do not worry, masturbation is ok, better than a complete sexual abstinence. Good luck!