In Grain Brain , Dr. David Perlmutter argues that dietary carbohydrates, sugar, and gluten drive chronic inflammation, causing neurodegenerative conditions. He advocates for a high-fat, gluten-free, and low-carb diet to reduce brain dysfunction, though critics note that some claims, such as the dangers of gluten for non-celiac individuals, are overstated. For a detailed review of the arguments, visit Red Pen Reviews . Grain Brain: Perlmutter, David, Ganim, Peter - Amazon.com