"Grain Brain"

This is a very good review of a book by David Perlmutter about the effect of diet -- and specifically, grains -- on the brain and how to achieve optimum brain health: 

Your “Healthy” Diet Could Be Quietly Killing Your Brain
www.psychologytoday.com

Dr. Perlmutter has other books that I highly recommend, including The Better Brain Book and Raise a Smarter Child by Kindergarten.