Our adult son was diagnosed with Aspergers when he was about 5. He is 23 now. He was also a very picky eater, since going primal he has changed enormously. He eats a wide variety of food, any many many of his asperger traits are gone... completely. He makes statements now like what was I thinking back then? He can still be a little awkward and stuff that others learnt early on in their childhood is being learnt now but I am forever grateful he found this way of eating.
He chose to eat primal himself as an adult and embraced the lifestyle. Your boy may not choose to do this ever but thought it would be helpful to know of the possibilities. As a parent I was always concerned about what his life would be like now I am much less fearful.