Theres alot of anecdotal evidence from parents that seems to prove some of this. There are two problems: 1) Most people with autism don't have it e.g. there is

Theres alot of anecdotal evidence from parents that seems to prove some of this. There are two problems: 1) Most people with autism don't have it e.g. there is no good definition. 2) Not only are diet studies hard to do because they involve self reporting, but there is no money in telling a person that they should eat right unless its part of a diet fad.