Puberty...as well u may notice that its happenin in developed or developing countries... naturopathy scientists say that its the effect of chickens that we eat. I hope u knw that the chicken (full size) ones we get are just 2 weeks old. The powerful hormones injected into it boosts its un-natural growth (seems to be convincing). We people feed on these artificial animals and hence boosts our own un-natural growth...