#1 Neurologists: What You Can Do to Prevent Alzheimer's & Dementia
Neurologists Dr. Aisha and Dr. Dean Shirzai explain how five lifestyle factors - nutrition, exercise, stress management, sleep, and cognitive activities - can reduce Alzheimer's risk by up to 90% and help grow brain connections at any age.
Summary
Board-certified neurologists Dr. Aisha and Dr. Dean Shirzai, a married couple who have studied the healthiest populations in America, share research-backed strategies for preventing dementia and maintaining brain health throughout life. They explain that dementia affects every family and that brain decline begins decades before symptoms appear, but emphasize that the brain is incredibly adaptable and forgiving at any age. The doctors demonstrate how lifestyle choices either build or destroy connections between neurons, using visual aids to show how poor habits sever neural pathways while healthy practices create up to 30,000 connections per neuron. They introduce their NEURO framework: Nutrition (particularly leafy greens which can make your brain 11 years younger), Exercise (especially leg strength exercises that reduce Alzheimer's risk by 47%), Unwinding from stress (which shrinks the brain's memory center), Restorative sleep (when the brain cleanses itself of toxic proteins), and Optimizing cognitive activities through complex, purposeful challenges. The doctors emphasize that these interventions are cumulative - following just one or two can reduce dementia risk by 30%, while implementing four or more can reduce it by 60%. They stress that caregivers, particularly women in midlife, are at especially high risk due to chronic stress and shared lifestyle factors. Throughout the conversation, they provide practical, accessible recommendations that anyone can start implementing immediately, emphasizing that the brain responds positively to healthy changes regardless of age.
About this episode
Today’s episode is a MUST listen. This is one of the most important conversations you will ever hear about Alzheimer’s prevention, dementia, memory loss, and brain health. If you’re worried about your memory, your parents’ memory, or your risk of cognitive decline as you age, this episode gives you something most conversations don’t: real hope, backed by science, and a clear plan you can start today. In this powerful episode, Mel sits down with world‑renowned neurologists Dr. Ayesha Sherzai and Dr. Dean Sherzai, two of the leading medical experts in Alzheimer’s disease, dementia, and cognitive decline. Together, they break down what dementia actually is, how Alzheimer’s fits into it, and why brain decline often begins 20+ years before symptoms appear - long before most people think to pay attention to brain health. Dr. Ayesha and Dr. Dean explain how brain health is not determined by genetics alone, and why your daily habits have the power to prevent, slow, and even pause cognitive decline. They share the exact science‑backed framework they teach their patients, built around five simple pillars of brain health using one unforgettable acronym: NEURO. You’ll also learn how to tell the difference between normal forgetfulness (like walking into a room and forgetting why) and early warning signs of dementia that should prompt a doctor visit. And if you’re a caregiver - or love someone who is - this episode is essential listening. The doctors explain why caregivers face a significantly higher risk of cognitive decline, how chronic stress and poor sleep damage the brain, and what you can do to protect your own memory while caring for others. In this episode, you’ll learn: - How to prevent Alzheimer’s disease and slow cognitive decline using science‑backed daily habits - The difference between normal age‑related forgetfulness and early warning signs of dementia - What dementia actually is, how Alzheimer’s fits into it, and why brain decline can start decades before symptoms - Why genetics are not your destiny when it comes to memory loss and brain health - The NEURO framework neurologists use to protect memory and reduce Alzheimer’s risk - How exercise, deep sleep, stress reduction, and nutrition physically grow new brain connections There is so much good news in the research. There are simple, free things you can do starting today - even while listening - that can reduce dementia risk by up to 53% and dramatically improve long‑term brain health. If you’re concerned about Alzheimer’s, dementia, memory loss, or your cognitive future - this is the conversation you need. For more resources related to today’s episode, click here for the podcast episode page. If you liked the episode, check out this one with neuroscientist, Dr. Wendy Suzuki next: Change Your Brain: #1 Neuroscientist’s Exercise Protocol for Peak Energy and Focus Connect with Mel: Order Mel’s new product, Pure Genius Protein Get Mel’s newsletter, packed with tools, coaching, and inspiration. Get Mel’s #1 bestselling book, The Let Them Theory Watch the episodes on YouTube Follow Mel on Instagram The Mel Robbins Podcast Instagram Mel's TikTok Subscribe to SiriusXM Podcasts+ to listen to new episodes ad-free Disclaimer
Key Insights
- The doctors argue that brain health is more under our control than any other organ system, with the brain constantly growing or shrinking based on daily lifestyle choices
- Dr. Aisha explains that dementia begins as a spectrum with damage accumulating over decades, potentially starting 20 years before symptoms appear in a preclinical stage
- The neurologists demonstrate that chronic stress literally shrinks the hippocampus and prevents memory formation by keeping the brain in fight-or-flight mode
- Dr. Dean reveals that just eating one serving of leafy green vegetables daily can make your brain function like it's 11 years younger based on neuroimaging studies
- The doctors show through twin studies that leg strength exercises alone reduced progression from mild cognitive impairment to dementia by 47% in just six months
- Dr. Aisha explains that the brain has no pain receptors, so people don't feel damage accumulating until it's significant, unlike other organs that signal distress
- The neurologists argue that legs are a bigger pump for blood to the brain than the heart itself, making walking and leg exercises critical for brain health
- Dr. Dean claims that following their five-factor NEURO protocol can reduce Alzheimer's risk by up to 90%, with even partial compliance showing 30-60% risk reduction
- The doctors reveal that during sleep, specialized cells called microglia act as janitors, cleaning toxic amyloid and tau proteins from the brain
- Dr. Aisha explains that caregivers, especially women, have a 600% greater risk of developing dementia due to chronic stress and shared lifestyle factors
- The neurologists demonstrate that complex activities engaging multiple brain regions simultaneously, like learning musical instruments, are more protective than simple puzzles
- Dr. Dean argues that the brain's 86 billion neurons can form anywhere from 2 to 30,000 connections each, depending on lifestyle choices, and these connections can be rebuilt at any age
Topics
Transcript
Hey, it's your friend Mel, and welcome to the Mel Robbins Podcast. I got to tell you, today you and I are going to talk about a topic that gets me choked up because it's that important. And it hits home for both you and me because right now you have somebody in your life who is either experiencing cognitive decline or they're in the early stages of dementia. They may not even know it. Or you have somebody in your family who's already been diagnosed or died from Alzheimer's. And this topic makes me emotional because it's something that you and me and everyone is dealing with in their families. And when you do, it can be so draining…
Full transcript available for MurmurCast members
Sign Up to AccessMore from The Mel Robbins Podcast
Mayo Clinic Dermatologist: 5 Small Habits for Healthier, Younger, and Amazing Skin
Dr. Saranya Wiles, a dermatologist and researcher at Mayo Clinic, explains how skin functions as a diagnostic tool for overall health and reveals five interconnected pillars for optimizing skin aging: sleep, diet and hydration, movement, stress reduction, and topicals/treatments. She demonstrates through research, personal testing, and visual demonstrations how skin changes reflect deeper systemic issues and how lifestyle modifications can significantly improve skin health and function.
This One Skill Makes Every Relationship Better
Mel Robbins explains that empathy is the foundational skill that makes people likable and improves all relationships. She teaches four practical daily practices: asking rather than guessing how people feel, going first with gestures of care, providing concrete support without being asked, and maintaining consistent small acknowledgments like waving to neighbors.
Reinvent Yourself At Any Age: Ina Garten Shares the Secret to Transforming Your Life
Ina Garten discusses her unconventional career journey from working in nuclear energy policy at the Office of Management and Budget to founding the iconic Barefoot Contessa specialty food store at age 30, emphasizing the importance of pursuing what excites you, being willing to work scared, and making deliberate life decisions rather than following predetermined paths.
#1 Neuroscientist: After Listening to This, Your Brain Will Not Be the Same
Dr. Laura Boyd, a leading neuroscientist, explains how neuroplasticity allows the brain to change throughout life through intentional experiences. She reveals that the brain changes in three ways (chemistry, structure, and function), and that struggle and difficulty are essential for learning and brain rewiring. Key practices for brain health include sleep, exercise, stress reduction, and engaging in challenging activities.
How to Stop Being Overlooked & Start Getting What You Want With Top Business School Professor
Business school professor Marina Cooley teaches strategies for standing out professionally by amplifying achievements, building a memorable personal brand, and overcoming the fear of self-promotion. She argues that women must actively communicate their accomplishments to advance, and that in an attention economy of 6,000-10,000 daily messages, being memorable and strategic about visibility is essential for career progression.