Do you mean protein generally, or the milk protein, called casein?
Gluten and casein are thought to be common problems in autism and many people see positive results from cutting them out of the diet. I am an adult with Asperger's, and I recently tried it myself and found benefits to cutting out dairy - none really autism related though. I have ME and depression, and cutting out dairy has helped with both conditions. I have found that I can eat small amounts with no problem, and I "cheat" sometimes, especially when I am away from home.
Cutting out dairy has been difficult as I enjoy dairy products so much. Soya milk really does not taste like milk at all, it is a completely different product. It is nice with chocolate powder added, but I cannot eat it on cereal. Soya yoghurts are actually very nice. I miss cheese a lot. Dairy free cheese is really unpleasant. Everyone is different though, and your daughter might like the taste. Any kind of restricted diet means reading labels on everything
and cooking from scratch a lot more, but it becomes second nature after a while. Introducing new foods to a person with autism can be difficult. If you decide to try it, involve her in the preparation as much as possible. This will allow her to feel more in control of what she is eating, and more likely to try it.
With intolerances, the only way to be sure is to try it. I have been really surprised at the results.
I don't really know anything about PKU, are there clear-cut tests that could diagnose it? If it seems likely, it would be worth checking. There are many reasons why the doctor in Turkey didn't mention it. He may not have been looking for it.
Edited by Tally, 09 September 2008 - 09:50 PM.