I've read that there's a significantly higher risk of autism associated with advanced age of the parents, particularly the mother. http://psychcentral.com/news

I've read that there's a significantly higher risk of autism associated with advanced age of the parents, particularly the mother. http://psychcentral.com/news/2014/04/23/risk-of-child-autism-goes-up-with-older-parents-especially-mothers/68866.html http://psychcentral.com/news/2014/04/23/risk-of-child-autism... This might partly explain why autism is increasingly prevalent in wealthier societies where families are more likely to delay childbirth.