663: Daily choices that shape brain health in your 30s, 40s & beyond | David Perlmutter, MD

663: Daily choices that shape brain health in your 30s, 40s & beyond | David Perlmutter, MD

August 17, 2026 · 47 min

About this episode

David Perlmutter discusses daily choices that influence brain health across different life stages.

“We can choose our brain’s destiny,” says David Perlmutter, MD. Perlmutter is a Board-Certified Neurologist and six-time New York Times bestselling author whose work focuses on the intersection of neurology, nutrition, and brain health. He is on the Board of Directors of the American College of Nutrition and the Editorial Board of the Journal of Alzheimer’s Disease. His books, including the #1 bestseller Grain Brain, has been published in 32 languages and sold over a million copies. Perlmutter lectures globally at leading institutions and has been featured on major media outlets including 20/20, CNN, The Today Show, and Oprah. His new book, Brain Defenders, focuses on the pivotal role of microglia, the brain’s immune cells, in protecting, repairing, and reprogramming the brain for lifelong resilience, and is now available for pre-order. 00:00 - Treating the symptoms, not the cause  02:37 - Microglial cells & their evil twin state  05:44 - How metabolism affects the brain  08:00 - Gut bacteria, inflammation, & brain degeneration  11:38 - Why lifestyle beats the APOE4 gene  16:25 - Perlmutter’s daily routine 23:55 - Loneliness & oxytocin  26:21 - The…

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