Very interesting board in yahoo: people are using special enzymes (apparently no more expensive than enzymes from the common health food store, but formulated specifically for digestion of autistic and ADD people), with some great success in eliminating symptoms of autism and ADD, and gradually being able to resume eating most foods without relapsing. Simple life for these families?! and success??
Here is the link to the board, but you may have to first sign up in Yahoo groups to be a member of the board before you can read the messages there.