I put Brain Maker down because I wanted to read them on order, so now I'm reading Perlmutter's 2013 Grain Brain: The Surprising Truth about Wheat, Carbs, and Sugar--Your Brain's Silent Killers. This one is focused like a missile on gluten, and not only those with celiac disease. A few cases of his where children with ADHD got better fast by first checking their gluten levels, finding them high, restricting them from their diet, and they got better. One with tourette's syndrome also got better by quitting gluten.