http://www.sciencenews.org/view/generic/id/41354/title/Gene_links_autism%2C_bellyaches

The article, "Gene Links Autism, Bellyaches", suggests that there is a gene that links autism and gastrointestinal problems. It says that the secret is in the MET gene, and that autistic children with the MET-c variant are more likely to have stomach problems then those with the MET-g variant of the gene. Neurologist Martha Herbert later suggests that autism may not (as widely believed) be caused by difference in brain structure, but from bodywide dysfunction in cells.

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