What anyone wants to put in their body isn't my choice and I think anyone can do what ever. That said I don't think anyone should mess with juice until 24 at the earliest and 25 is what I would suggest. I wouldn't want my future son to juice. I think if you kept it to a moderate dose of test and only test which I don't think anyone could/would do then I'd feel better about it. My answer is stay away unless you're getting paid to use your body sports/stripper/competing athlete. There is so little research on long term effects it's hard to give an answer. If you want to live a longer healthier life I would avoid it. That said.... I don't practice what I preach.