Dr. Majid Fotuhi, Johns Hopkins and Harvard-trained neurologist and neuroscientist with 37 years of experience, joins Host Dave Asprey to reveal why Alzheimer’s is not a single disease but a soup of modifiable problems that 97% of patients can actually do something about, why your brain is physically shrinking right now if you are not actively doing the things that grow it, and why brain fog is never permanent and always has a treatable cause. They also cover why the hippocampus can literally grow larger at any age through exercise, meditation, and nutrition, why “normal” lab ranges for B12 and thyroid are actively harming millions of people whose brains are starving while their doctors tell them everything is fine, why the ApoE4 gene that doubles your Alzheimer’s risk can be completely neutralized by exercise alone, how loneliness and social isolation cause measurable brain atrophy and physically shrink the hippocampus, why VO2 max is the single most important biomarker for predicting brain aging and cognitive decline, what psilocybin, ketamine, and ibogaine actually do to the brain according to a Johns Hopkins neurologist, how GLP-1s reduce cravings for alcohol, gambling, and drugs through direct brain effects beyond weight loss, and why lithium orotate is a missing nutrient from the modern diet that people in high-lithium groundwater regions have always had natural protection from Alzheimer’s through. Essential listening for anyone serious about biohacking, brain optimization, longevity, anti-aging, neuroplasticity, functional medicine, human performance, cognitive decline prevention, sleep optimization, nootropics, supplements, mitochondria, and taking full control of your biology and brain health with the most cutting-edge neuroscience available today.
How to Reverse Cognitive Decline, Grow Your Hippocampus, and Protect Your Brain from Alzheimer’s Disease with Nutrition, Exercise, Sleep, and Stress Reduction
Your brain is physically shrinking right now, and most people have no idea it’s happening. In this episode, you will discover the exact mechanisms behind cognitive decline, why brain fog is always treatable, and the proven strategies to grow your brain back, protect your memory, and slash your Alzheimer’s risk regardless of your genetics.
-Watch this episode on YouTube for the full video experience: https://www.youtube.com/@DaveAspreyBPR
Host Dave Asprey sits down with Dr. Majid Fotuhi, a neuroscientist and neurologist who earned his PhD from Johns Hopkins University and his medical degree from Harvard Medical School. He currently serves as an adjunct professor at the Mind/Brain Institute at Johns Hopkins while also teaching at George Washington University and Harvard Medical School. With 37 years of experience in clinical practice, teaching, and neuroscience research, Dr. Fotuhi pioneered the Brain Fitness Program, a multidisciplinary approach to cognitive performance and brain vitality at any age that has produced measurable results documented in peer-reviewed journals. He is the author of three books including the bestselling The Invincible Brain and one of the world’s leading experts on neuroplasticity, hippocampus growth, and successful aging. If anyone has earned the right to tell you your brain can get better, it is him.
Dr. Fotuhi and Dave break down why Alzheimer’s is not a single disease but a soup of modifiable problems, why your lab results can show “normal” while your brain is starving, and how the five pillars of brain health connect directly to longevity, mitochondria function, and human performance. They also get into the brain effects of GLP-1s, the therapeutic promise of psychedelics like psilocybin and ketamine, the role of nootropics and supplements like B12, lithium orotate, and CoQ10, and why your VO2 max may be the single most important number for brain aging.
You’ll Learn:
Keywords: Majid Fotuhi, Dr. Majid Fotuhi, The Invincible Brain, brain health, cognitive decline, Alzheimer’s prevention, hippocampus, neuroplasticity, brain fog, memory loss, APOE4, brain shrinkage, B12 deficiency, lithium orotate, CoQ10, nootropics, VO2 max, mitochondria, longevity, anti-aging, biohacking, brain optimization, sleep optimization, stress reduction, functional medicine, human performance, psilocybin, ketamine, GLP-1, semaglutide, telomeres, BDNF, brain training, cognitive performance
Resources:
00:00 – Trailer
Dave previews why brain health is the foundation of everything and introduces today’s guest.
00:59 – Intro
Dave shares his personal journey with brain fog, biohacking, and why he believes you can’t separate brain function from longevity.
03:00 – Cannabis & Nicotine
Dr. Fotuhi breaks down why cannabis isn’t harmful but isn’t helpful either, and why nicotine is a very different conversation than smoking.
04:15 – Understanding Alzheimer’s
Alzheimer’s isn’t one disease but a soup of modifiable problems, and 97% of cases have multiple causes you can actually do something about.
05:38 – Five Pillars Explained
Dr. Fotuhi lays out the five pillars of brain health: exercise, sleep, nutrition, stress reduction, and brain training, and why four of them benefit every organ in your body.
07:55 – Best Cognitive Training
The best brain training isn’t sitting in front of a computer but doing anything that pushes you outside your comfort zone and creates new synapses.
09:08 – Brain Size & Growth
Your brain is not fixed like a computer but more like a garden, and the hippocampus can literally grow larger through exercise, meditation, and nutrition.
12:36 – B12 & Lab Ranges
A young woman was admitted to a psych unit for behavior problems and incontinence that turned out to be pure B12 deficiency, and why “normal” lab ranges are actively harming people.
17:48 – Head-to-Toe Evaluation
Dr. Fotuhi’s method for solving brain fog starts with 40 questions covering every organ in the body, because almost everything below your neck can affect your brain.
24:17 – Sex & Brain Health
Sexual activity and intimacy are directly linked to better cognitive function and longevity, and the lifestyle that gives you a better brain also gives you a better sex life.
25:43 – Loneliness & Isolation
Loneliness is a major risk factor for Alzheimer’s and physically shrinks the hippocampus, while even having a pet is associated with better cognitive function.
33:59 – ApoE4 Genetics
Having the ApoE4 gene increases Alzheimer’s risk but exercise alone can reduce amyloid levels to the same as someone who is ApoE4 negative.
35:28 – Alzheimer’s Declining
In parts of Western Europe and the US, Alzheimer’s incidence is actually going down as more people become conscious of how lifestyle impacts brain health.
48:44 – Lithium & Brain
Lithium orotate is a missing nutrient from the modern diet, people in areas with high lithium in groundwater have less Alzheimer’s, and 7 Up originally contained it for a reason.
59:38 – VO2 Max & Fitness
VO2 max is Dr. Fotuhi’s top marker for brain aging, longevity, and overall organ health, and fitness level is one of the strongest predictors of hippocampus size.
1:06:42 – Psychedelics
Dr. Fotuhi ranks psilocybin, ketamine, and MDMA as the most therapeutically promising psychedelics, and Dave shares his before and after EEG data from an ibogaine experience.
1:09:38 – GLP-1s & Brain
GLP-1s have direct brain effects beyond weight loss including reducing cravings for alcohol, gambling, and drugs, but may cause anhedonia in some people at higher doses.
1:12:38 – Closing & Action Steps
Dr. Fotuhi makes the case that following the five pillars of brain health works 100% of the time, and Dave challenges listeners to get curious instead of skeptical.
Thank you to our sponsors!
– Viome | Check it out at viome.com and use code 10DAVE for 10% off. It’s time to stop guessing and start knowing your body.
– BrainTap | Go to http://braintap.com/dave to get $100 off the BrainTap Power Bundle.
– Pique | Go to Piquelife.com/dave for 20% off.
– BodyHealth | Visit BodyHeath.com and use code DAVE20 for 20% off your first purchase
“Follow” or “subscribe” to The Human Upgrade™ with Dave Asprey on your favorite podcast platform.
Go to Apple Podcasts at daveasprey.com/apple and leave a (hopefully) 5-star rating and a creative review.
Got a comment, idea or question for the podcast? Submit via this form!
Follow @thehumanupgradepodcast on Instagram and Facebook.
Learn directly from Dave Asprey alongside others in a membership group: ourupgradecollective.com.

Smarter Not Harder: The Biohacker’s Guide to Getting the Body and Mind You Want is about helping you to become the best version of yourself by embracing laziness while increasing your energy and optimizing your biology.
Receive weekly biohacking tips and tech by becoming a Dave Asprey insider.