For what it's worth the early indians had a much higher rate of infant mortality, a much shorter average life-span, and, according to fosil studies, were much less healthy than we, grew stunted and died of avoidable deseases (such as disentery caused by giardia) The rural agricultural mexican society of today enjoys similar statistics. When you spin the roulette wheel of arrogance and disrepect in regards to simple biohazards the statistics will catch up with you.