Roids affect many people in many different ways, what happend to one guy may not happen to you and vice versa. Is what you are actually asking is a million dollar question, it all goes on how you are and how your body reacts to it. I personally wouldn't give any advice to the sort of question as it would never be right, the only way to be sure is to try it. I did wait till i was 27 like but each to their own.