Can someone help?Doing a paper on Autism?

You're going to have a lot of trouble with that, given the lack of empirical evidence supporting dietary treatments for autism. People with autism are, in general, *not* affected by their diets, at least not more than anyone else. Writing a paper on this subject would require using unscientific or anecdotal sources that go against the current scientific findings. I strongly encourage you to change your topic to something with more scientific support and merit.