Because of a natural medicine doctor and special diets, my daughter has lost a pdd diagnosis. Parents of autistic children are vunerable. I really feel for them. There is so much info and how do you decipher. I feel there are legitimate natural doctors and very close minded conformist main stream medical doctors who follow the lead of special interests or money (pharmaceutical co) and ignore the multitude of parents who are saying there child regressed after the MMR. (Are all these parents wrong? ) Ultimately, parents make the decisions. We know in our gut what is working and what harms. Be skeptical of absolute definite statements. There are no clear cut answers.