utopia wrote:
I have considered going on GFCF diet but I have read that there are many forbidden foods (margarine, chocolate, vinegar, coffee, glutamate...). Have you stopped eating all the forbidden foods or just milk and wheat?
There's disagreement about exactly where to draw the line about various foods on a GFCF diet. Chocolate typically has milk in it, so that's on the "don't eat" list. But foods like vinegar and such are borderline or okay in some people's view. Others consider them essential to eliminate as well.
The one thing you can count on not doing is eating in restaurants. The various extra ingredients, from butter to wheat bran, used to enhance flavor and texture in foods are too numerous to keep track of, and the simple solution is to avoid restaurants while trying the diet.
If you follow a GFCF diet, you are basically conducting an experiment on yourself. How you conduct it is up to you. If you benefit from following the GFCF diet, you'll have lots of reasons and motivations to continue, and there are good books and websites with recipes, cooking tips, and forums discussing the various borderline foods for this diet.
Most studies to date on this diet have shown a benefit for a subset of children on the spectrum. No formal study has shown any benefit for adults. But there is no risk to this diet as long as you eat a nutritious variety of food, so try it if you are so inclined.