Use of SSRI Antidepressants During Pregnancy Linked to Higher Risk of Autism – TIME Healthland – TIME.com http://healthland.time.com/2011/07/05/antidepressant-use-during-pregnancy-linked-to-higher-risk-of-autism/

In a study involving data on more than 1,800 children —fewer than 300 of whom had an autism spectrum disorder (ASD) —and their mothers, the scientists found that women who were prescribed drugs to treat depression in the year before giving birth were twice as likely to have children with an ASD, compared with women who did not take antidepressants. The risk was even greater for women who were prescribed the drugs in the first trimester: their children were nearly four times more likely to develop autism or a related disorder.

Surprised it took this long to  establish a link.  My guess is that if you take this, and increasing average mother’s age at birth, then the entire *autism epidemic* is easily explained.