319 — How to Beat Brain Fog and Prevent Dementia With Harvard-Trained Dr. Majid Fotuhi

Most of us don’t think about brain health until something goes wrong. We think it’s normal to experience brain fog or we just accept cognitive decline is inevitable as we age.
 
Science shows you can physically change your brain at any age. You can grow new neurons, build stronger connections, and even shrink your risk of Alzheimer’s — and it doesn’t require anything mysterious or extreme.
 
My guest is Dr. Majid Fotuhi, a renowned neurologist and one of the world’s leading experts in brain health. He received his MD from Harvard Medical School and his PhD in Neuroscience from Johns Hopkins University School of Medicine, where he now serves as an adjunct professor at the Mind/Brain Institute. He’s also the author of the new book The Invincible Brain.
 
Some of the things we discuss are:
 

• Why your brain is an organ you can care for like your teeth or your heart — not a mysterious black box you’re stuck with
• The 12-week brain fitness study that showed older adults physically grew their brains by 1–3%, making them up to three years younger on an MRI
• Why genetics play a surprisingly small role in late-life Alzheimer’s — and how exercise can cancel out the effects of the highest-risk gene
• The exact amount of exercise that strengthens your brain (and why doing more than this won’t help)
• Why sleep is an active brain-cleaning process — and what 20+ years of insomnia does to the memory center of your brain
• The one rule about food Dr. Fotuhi cares about more than keto vs. Mediterranean vs. vegetarian
• How chronic stress physically shrinks your brain, plus the perspective shift his daughter learned that keeps her calm under pressure
• Simple daily ways to challenge your brain — from memorizing names to license plates in traffic
• The Therapist’s Take: My top three strategies for building a physically stronger, younger brain starting today

Key Takeaways:

• Exercise can significantly enhance brain health by increasing the number of neurons and improving blood flow. 
• A healthy diet plays a crucial role in brain health, with the Mediterranean diet recommended for its benefits on brain size and function.
• Prioritizing sleep is essential for brain maintenance, as it facilitates memory consolidation and the removal of waste products.
• Managing stress through mindfulness and perspective shifts can significantly impact brain resilience and reduce harmful cortisol levels.
• Engaging in daily mental challenges and learning new skills can boost cognitive function.