The Autism Society says, "Researchers are investigating problems during pregnancy or delivery as well as environmental factors, such as viral infections, metabolic imbalances, and exposure to environmental chemicals." [http://www.autism-society.org/site/PageServer?pagename=about_whatcauses] | The Autism Society says, "Researchers are investigating problems during pregnancy or delivery as well as environmental factors, such as viral infections, metabolic imbalances, and exposure to environmental chemicals." [http://www.autism-society.org/site/PageServer?pagename=about_whatcauses] |