Yea most gurls do start later with producing eggs and what not... but the hormones part is true, they inject cows with hormones to produce more milk and that has an effect on the younger girls that drink it, causing them to hit puberty earlier and earlier... And girls did used to get married at 11 and 12 and have children real quick trying to keep up the population but most of the time they had miscarriages because an 11 year old's body isn't ready for that kind of strain...