In regards to underaged sex, i'm generally a dis-approver. However, from my own experience, when 14 yrs. old, I stayed with my Uncle on his farm for the school summer break.
During my time, (his wife had left him and he had no children) he taught me 'logically' how beneficial male Protein was for growing girls. At 14, i was already verging on C cup and 3rd. biggest in my age group, for overall height, weight etc. Anyway, having been fed Protein by Uncle for 6 weeks, I couldn't wait to tell my school b/f. who promptly told his friends etc. and i am sure i failed College, because of my extra ciriculumcum.
However, would i have been such a healthy, smooth complexioned hu-cow now, if i hadn't. One thing's for sure, male Protein is good for complexion. As for rest, well my mom is a saggy H cup. and i never liked to ask her. (smile)
So, i guess, depending on circumstances. If need good education and not worried about Acne, don't listen to Uncles.