Yeah, as I recall both sides of the vaccine debate (which, really, is almost over even in the hotbeds - I was there to watch it die) used the Amish as fuel. I guess my point was that if we can prenatal SSRIs to autism, we need to find a community that eschews SSRIs.
Add to that the fact that the increase in autism diagnosis has been steep enough that if there were one thing (SSRIs, for example, or anything else), it would be the easiest thing for any decent statistician to pick out. The fact that it's taken this many years to even suggest this possibility means that if there's an effect, it's almost undoubtedly weak. It took, what, one or two days of good study for the academic community at large to reject the vaccine hypothesis? Sadly, once the meme is released, it multiplies on its own. Hopefully antidepressants don't suffer the same fate, as they help a lot of people, especially at times of great hormonal flux such as baby time. Know what else is really bad for kids? Maternal depression.