Just had this discussion with my brothers wife. Her job is to diagnose children with these type of conditions. Our conversation was very informative. She was explaining to me how a great deal of children aren't really autistic or ADD/ADHD.
The majority is due to lack of healthy choices in diet. Lack of proper nutrition (plant based whole food) and overload of artificial sugars and RED AND YELLOW DYE.

She went on to tell me she forwards a lot of information and sites for the parents to do research and they normally have a very successful turn around of the behaviors that led them to believe they had an issue.