The Foods, Drinks, and Daily Habits Wrecking Your Brain (Surprising!) | David Perlmutter : 1498

Neurologist Dr. David Perlmutter Explains Brain Inflammation and Alzheimer's Risk 

Your brain has its own immune system, and when it turns against you, it becomes the hidden driver behind Alzheimer's, Parkinson's, depression, and even long COVID. This episode hands you the science to recognize it early and reverse it. 

Get Dr. Perlmutter’s new book Brain Defenders: https://drperlmutter.com/books/brain-defenders/ 

Host Dave Asprey sits down with Dr. David Perlmutter, a board-certified neurologist and six-time New York Times bestselling author whose work sits at the intersection of neurology, nutrition, and brain health. He is a Fellow of the American College of Nutrition, serves on its Board of Directors, and sits on the Editorial Board of the Journal of Alzheimer's Disease. His books, including the number one bestseller Grain Brain, span 32 languages and have sold over a million copies, and his upcoming release, Brain Defenders, explores the pivotal role of microglia, the brain's immune cells, in protecting, repairing, and reprogramming the brain for lifelong resilience. 

Dave and Dr. Perlmutter break down how microglia, the brain's resident immune cells, shift from a supportive state into a destructive one called M1, and why this shift, not amyloid plaque, may be the real driver of Alzheimer's, Parkinson's, and other neurodegenerative conditions. They dig into why the leading amyloid-clearing drugs fail to improve cognition, what a landmark JAMA study revealed about reversing cognitive decline through lifestyle intervention alone, and why a single daily serving of ultra-processed food raised Alzheimer's risk by 13 percent in a 12.7 year study. They also cover new research on GLP-1 drugs and brain inflammation, the surprising role of gum disease and oral bacteria in dementia risk, and why 40 hertz light therapy is emerging as a low-cost tool for clearing brain plaque and calming neuroinflammation. 

You'll Learn: 

• Why the shift from supportive to destructive brain immune cells may be the true root cause of Alzheimer's and Parkinson's 
• Why leading Alzheimer's drugs fail to improve cognition, and what the original research behind the amyloid hypothesis actually showed 
• How one daily serving of ultra-processed food raises Alzheimer's risk, and what a landmark lifestyle intervention study found instead 
• Whether GLP-1 drugs help or harm brain inflammation, based on new Parkinson's and Alzheimer's trial data 
• How gum disease and oral bacteria are linked to dementia, and simple daily habits that reduce that risk 
• Why 40 hertz light therapy is emerging as a tool to clear brain plaque and calm neuroinflammation 
• How ketones, DHA, and metabolic health protect the brain after head injury 

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Dave Asprey is a four-time New York Times bestselling author, founder of Bulletproof Coffee, and the father of biohacking. With over 1,000 interviews and 1 million monthly listeners, The Human Upgrade brings you the knowledge to take control of your biology, extend your longevity, and optimize every system in your body and mind. Each episode delivers cutting-edge insights inhealth, performance, neuroscience, supplements, nutrition, biohacking, emotional intelligence, and conscious living. 

New episodes are released every Tuesday, Thursday, Friday, and Sunday (BONUS). Dave asks the questions no one else will and gives you real tools to become stronger, smarter, and more resilient. 

Keywords: microglia, brain inflammation, Alzheimer's prevention, Parkinson's disease, amyloid hypothesis, neurodegeneration, GLP-1 drugs, semaglutide, ultra-processed food, gum disease and dementia, oral microbiome, 40 hertz light therapy, ketones, DHA, mitochondria, brain fog, long COVID, David Perlmutter, Brain Defenders, Grain Brain, functional medicine, biohacking, longevity, neuroplasticity 

Resources:   

• Get Dr. Perlmutter’s New Book Brain Defenders: https://drperlmutter.com/books/brain-defenders/ 

• Learn More About Dr. Perlmutter’s Work At: https://drperlmutter.com/ 

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Timestamps:  

00:00 – Trailer 

00:40 – Intro 

02:38 – Ultra-Processed Foods 

06:34 – Are Carbs Bad? 

08:48 – Alcohol & Brain Health 

12:28 – Microglia & Inflammation 

24:37 – Head Injury & Recovery 

29:27 – Oral Bacteria & Dementia 

34:08 – GLP-1s & Brain Inflammation 

40:20 – 40 Hertz Light Therapy 

48:35 – Air Pollution vs. Lead 

50:27 – David's Closing Truth 

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