Dr. David Perlmutter's groundbreaking #1 New York Times bestseller, now fully updated with the latest breakthroughs in nutrition and brain science.Since its publication in 2013, Grain Brain has transformed the way millions understand the impact of gluten, sugar, and carbs - not just on their bodies but on their brains. Translated into over 30 languages and embraced by more than 1.5 million readers worldwide, this book has empowered people to shed excess weight, overcome anxiety and depression, manage chronic conditions, and proactively protect their cognitive health - all naturally, without reliance on medications.In this newly revised edition, Dr. Perlmutter expands on his revolutionary approach with fresh insights from cutting-edge research. He reveals how prioritizing fat as the brain's primary fuel, combined with a non-GMO, gluten-free, low-carb lifestyle, supports sharp cognitive function and long-term neurological wellness more powerfully than ever before.Packed with updated scientific data, practical strategies, enhanced testing protocols, supplement recommendations, and a wealth of new recipes, Grain Brain equips you to take control of your health journey and unlock vibrant brain and body vitality for life.