Would to like to hear oppinions on why some people believe Austim is related to routine childhood vaccinations. I have identical twin boys who have had the same vaccines in the same enviroment, and have ate the same foods (bc I have heard also there is a theory about chemicals used to preserve food contributing to Autism). The first born twin has high-fuctioning Asperger’s Syndrome, and the second born does not have any form of Autism. Based on this experience I don’t believe Vaccines had anything to do with this. If I had to venture a guess for the cause I would say that it may be an area of his brain did not develop correctly. Anyway, would love to hear oppinions on this subject, what you believe might be a cause of Autism, or other reasons why you may choose to not vaccinate your child. Thanks.