Quote:
Everybody knows it's because of heavy metals poisoning
This is funny because my mother once thought I may have developped a mild form of Autism because we moved to another house when I was 9 and we learned 9 years later that there was lead in the wall.
She felt really bad (because I had more and more difficulties as I grew up and had just told her what truly happened in school when I was younger) but never got me diagnosed of course, and since I have a real diagnosis of Dyspraxia now, I think she had long forgotten this idea, but I know many people who believe that autistic children (especially the most severe cases) have been exposed to lead and suddenly developped it.
(Though I have read it was linked to mental retardation in young children.)
Random cause : Science Fiction. Everyone knows that this is a nerd thing and that nerd is Aspeger or any disability.
Or dentists.