I have been making so many connections between autism and autoimmune diseases (M.S., fibromyalgia, celiac, Crohn's, food allergies, etc.). Aside from the inflammation factor, intestinal candidiasis seems to to be a common problem. All of these conditions seemed to be healed and/or greatly improved by going on no/low carb, no sugar diets (sounds miserable, i know).
The two most popular are the Paleo diet and the SC Diet. I have read many accounts of people recovering from M.S. by going on the paleo diet. Here is a personal account. The SC Diet was pioneered by Elaine Gottschall. She discovered a diet that completely healed her daughter's ulcerative colitis, and wrote a book that has helped many people recover from crohn's disease, ulcerative colitis, IBS, celiac, diverticulitis, autism, cystic fibrosis and other ailments rooted in the digestive tract. Her story is amazing, read it here. THe SC diet is supposedly one of the most effective for treating ASD children, and many parents who don't see results with the GFCF diet often find them with the SCD. The SCD children's site is here: www.pecanbread.com.
I'm not ready to give up non-gluten grains. But I have been taking precautions to make them more digestible. Information on soaking grains here. And I made this for dinner last night. It was delicious!