Around 12 or 12 1/2. Not to get off-topic, but I think dumping hormones into our food supply is not really helping. </DUmmy>
According to many reports that I have read, and stuff I have heard from friends that their pediatrician has told them....the hormones in our food supply is what is causing kids to be developing so much younger than they used to.
It is not uncommon for girls to be starting to develop breasts and start their periods at 9 or 10. Heck, all you have to do, is walk through the mall on a Saturday and look at the tweens and teenagers....they never looked like that when I was young.
Granted, I was young right after the wheel was discovered....but I don't remember many boys who shaved their faces even when they were freshmen in college. I know a high school boy that is a senior, just turned 18....he can grow facial hair overnight, that takes my 27 yo son 2 weeks to get that much!!
A friend's grandaughter was developing at 8, and at 10 weighed 120lb, started her period at 9. The child's parents took her to a endocrinologist, and he said he was seeing this all the time...and that doctors were attributing it to the growth hormones in food.