I know two kids on Atkins for medical reasons. One because he is extremly ADHD. It has helped so much. He was a holey terror last year when he was in my class. We discovered he can't tolerate any sugar or corn sweetner. It was when they took him off refined flour that he really improved. His second grade teachers says he is just a normal little boy now - active but stable. Last year he just stood and vibrated. He had no control of his outbursts. I suppose this was some kind of an allergy, but a have another child this year that is on Atkins for a different medical problem.