its nice people like to try and convince young guys to not juice, but you have to realize most are going to do so no matter what you say. While it may not be the best idea to juice in the long term, some people have short term goals, and are willing to take risks to achieve them. Am I 18? Yes, i am. Have I juiced before, yes i have. What did i get out of that? I almost won the Mr. Junior ** getting runner up. So in my mind it was worth it at the time and i would probably still say that too. -Just my two cents, Josh