What I know about Autism, its essentially brain damage. It is also made worse by the destruction of the gut. Diets have a HUGE impact (from my research) on autism. Fix the gut and you can fix a lot of behavior problems associated with autism. I know doctors that have taken children that were non verbal and couldn't walk and just by changing their diet and adding real nutrition the body can absorb. Those children are now walking and talking again. I also know you have to reverse the damage early. If you wait to long it won't happen once the body is grown. I guess eating veggies is better than eating a bunch of sugar, but its just cause your feeding yourself empty food with almost no nutritional value. One thing most people don't mention is that your body has to be able to break things down and absorb them. Certain things that are found in animal products are essential to life and cannot be found in fruits and veggies. You can't sustain yourself on just fruit and veggies, but you can on animal products.