text: my ten year old son is masturbating is that bad fro him?   this depends. if he has entered puberty then it is perfectly normal. people start puberty at all different ages and everyone starts mas*erba*ion at puberty.  if he has not entered puberty then it might be a little to young.........it might hurt his reproductive system. i started at puberty tho so i wouldn't know but i was 10 or 11.  just make sure he knows about internet sites that are ok and aren't. if you haven't had the sex talk yet you definetly want to do that now>>>>>>>>>>>>>>>hurry.....