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Cognitive Decline Expert: The Disease That Starts in Your 30s but Kills You in Your 70s

Alzheimer’s expert LOUISA NICOLA explains early Alzheimer’s risk, why creatine fuels brain energy and memory, deep sleep hacks, and why sitting is a silent killer! Louisa Nicola is a leading neurophysiologist and human performance coach who studies the brain and nervous system. She is the founder of Neuro Athletics, a consulting firm that provides scientific strategies for cognitive performance, and is also currently finishing her PhD at the University of Washington. She explains: ▪️Why 70% of Alzheimer's patients are women ▪️The "leaky brain" warning signs you are ignoring ▪️Why menopause triggers a 30% drop in brain energy ▪️How 20 minutes of Zone 5 training reverses heart aging ▪️Why your "willpower muscle" shrinks without hard challenges *(0:00) Intro* *(2:31) Why I’m on a Mission to Prevent Alzheimer’s for Millions* *(2:58) Alzheimer’s Might Be More Preventable Than You Think* *(4:34) How Lifestyle Habits Quietly Lead to Dementia* *(8:43) Why Some Older Adults Stay Mentally Sharper Than the Young* *(12:35) What Short-Form Content Is Doing to Your Brain* *(13:47) The Hidden Cognitive Power of Exercise* *(16:31) Why Strong Legs Might Be a Key to Brain Health* *(17:23) How Resistance Training Rewires Your Brain* *(21:08) Can Exercise Actually Help Suppress Cancer?* *(22:58) The One Exercise That Shields Your Brain Over Time* *(25:42) Can Aerobic Training Help Prevent Alzheimer’s?* *(28:47) What Cardiovascular Health Really Means for Your Brain* *(32:15) Why VO2 Max Could Predict How Long You’ll Live* *(34:45) The Best Exercises for Long-Term Brain and Mental Health* *(41:45) What to Do Right After an Alzheimer’s Diagnosis* *(45:05) Why the Ketogenic Diet Could Benefit Perimenopausal Women* *(50:12) What You Should Know About Hormone Replacement Therapy* *(52:31) How to Find the Best HRT for Your Body and Brain* *(1:00:24) Ads* *(1:01:56) The Overlooked Link Between Sleep Loss and Alzheimer’s* *(1:03:42) Why You Need to Rethink Your Sleep Habits Now* *(1:07:01) Can Ashwagandha and Rhodiola Really Reduce Stress?* *(1:10:02) The Most Potent Brain Supplement You’ve Never Tried* *(1:14:04) How Vitamin D Supports Longevity and Brain Health* *(1:15:03) The Most Affordable Way to Boost Brain and Body Function* *(1:34:34) Ads* *(1:36:27) Why Doing Hard Things Literally Grows Your Brain* *(1:43:28) Are Chatbots Causing Brain Rot? Here’s What We Know* *(1:49:03) The Truth Women Deserve to Hear About Their Health* *(1:57:39) What Happens When You’re Obsessed With Your Mission* Enjoyed the episode? Share this link and earn points for every referral - redeem them for exclusive prizes: https://doac-perks.com Independent Research: https://stevenbartlett.com/wp-content/uploads/2026/02/DOAC-Louisa-Nicola-Independent-Research-further-reading.pdf Follow Louisa: Instagram - https://linkly.link/2ZgsR YouTube - https://linkly.link/2ZgsW X - https://linkly.link/2Zgsa Neuroathletics - https://linkly.link/2Zgsf Podcast - https://linkly.link/2ZmIF You can learn more about ‘BRAIN CODE’, here: https://linkly.link/2ZmIC The Diary Of A CEO: ◼️Join DOAC circle here - https://doaccircle.com/ ◼️Buy The Diary Of A CEO book here - https://smarturl.it/DOACbook ◼️The 1% Diary is back - limited time only: https://bit.ly/3YFbJbt ◼️The Diary Of A CEO Conversation Cards (Second Edition): https://g2ul0.app.link/f31dsUttKKb ◼️Get email updates - https://bit.ly/diary-of-a-ceo-yt ◼️Follow Steven - https://g2ul0.app.link/gnGqL4IsKKb Sponsors: *Apple Card* - https://apple.co/get-daily-cash Apple Card issued by Goldman Sachs Bank USA, Salt Lake City Branch. Offer may not be available everywhere. Terms and limitations apply. *Ketone -* https://ketone.com/STEVEN for 30% off your subscription order Wispr - Get 14 days of Wispr Flow for free at https://wisprflow.ai/DOAC

Steven BartletthostLouisa Nicolaguest
Feb 5, 20262h 4mWatch on YouTube ↗

CHAPTERS

  1. 0:00 – 2:38

    Creatine as a brain-protection supplement (sleep loss, stroke, concussion)

    Louisa opens with an energetic case for creatine as a high-ROI supplement for brain energy and resilience. She cites evidence for mitigating sleep deprivation effects and supporting patients with Alzheimer’s-related fatigue and cognition.

  2. 2:38 – 5:25

    Why Alzheimer’s is urgent—and largely preventable

    The conversation frames Alzheimer’s as a growing global crisis that disproportionately affects women. Louisa argues most cases are driven by modifiable lifestyle factors rather than deterministic genetics.

  3. 5:25 – 7:44

    Alzheimer’s vs. dementia, and how it starts decades before symptoms

    Louisa explains dementia as an umbrella term and positions Alzheimer’s as a midlife disease process that begins silently. She outlines how brain decline compounds from common modern stressors long before diagnosis.

  4. 7:44 – 8:38

    What brain atrophy looks like (healthy brain vs. Alzheimer’s)

    Using brain imagery, Louisa describes cortical thinning, enlarged ventricles, and overall shrinkage. This segment grounds the discussion in visible structural changes linked to cognitive impairment.

  5. 8:38 – 11:52

    Cognitive reserve: why some 60-year-olds stay razor-sharp

    Steven asks why cognitive aging varies so much, leading to the concept of cognitive reserve. Louisa explains reserve as the brain’s capacity built through rich connections and sustained challenge.

  6. 11:52 – 13:44

    Building reserve: exercise, reading/handwriting—and why scrolling harms focus

    Louisa contrasts high-value brain behaviors with low-value dopamine-driven habits. She emphasizes exercise as the strongest lever, with reading/handwriting supporting preservation, while constant scrolling erodes sustained attention.

  7. 13:44 – 17:20

    Strength training for the brain: trials, genetics, and ‘strong legs’

    Louisa highlights resistance training as a top intervention for slowing cognitive decline, citing MCI studies and twin data. She also explains genetic risk (APOE4) while emphasizing risk is modifiable.

  8. 17:20 – 23:26

    Mechanisms: myokines, BDNF, inflammation, and ‘lift heavy’ neural drive

    This chapter explains why heavy resistance training uniquely benefits the brain. Louisa connects muscle contractions to myokines (e.g., irisin, IL-6), neurogenesis signals, and anti-inflammatory effects.

  9. 23:26 – 25:39

    Sedentary living as a disease—and the ‘10 air squats per hour’ fix

    Steven brings up ‘active sedentary’ risk: exercising but sitting all day. Louisa offers a practical countermeasure—hourly movement snacks—to reduce metabolic harm from prolonged sitting.

  10. 25:39 – 35:20

    Aerobic training, Zone 2 vs Zone 5, and remodeling the heart for brain health

    Louisa reframes cardio around time efficiency and intensity, advocating VO2-max work (Zone 5) alongside resistance training. She discusses Ben Levine’s study showing dramatic heart ‘rejuvenation,’ emphasizing midlife as the key window.

  11. 35:20 – 40:16

    Blood pressure, capillaries, and protecting the blood–brain barrier

    Louisa links vascular health directly to cognition via capillary integrity and the blood–brain barrier. She explains how hypertension accelerates microvascular damage and highlights home monitoring and clinical targets.

  12. 40:16 – 44:10

    Why Alzheimer’s kills—and what Louisa would do if diagnosed

    The discussion shifts from memory loss to the real causes of death in advanced Alzheimer’s. Louisa then outlines an aggressive mitigation playbook focused on exercise, diet, lipids, and social engagement.

  13. 44:10 – 52:54

    Women, menopause, and brain energy: estrogen, ketones, and HRT nuance

    Louisa explains the menopause-related drop in brain glucose metabolism and its link to brain fog and sleep disruption. She addresses hormone replacement therapy cautiously—potential benefits, but incomplete RCT evidence for dementia prevention.

  14. 52:54 – 1:01:22

    Core biology: amyloid, tau, and the role of deep sleep (glymphatic cleaning)

    Louisa clarifies what distinguishes Alzheimer’s: amyloid beta and tau pathology. She argues amyloid may be protective, but poor deep sleep impairs clearance, while stress and hormonal shifts promote tau tangles.

  15. 1:01:22 – 1:09:16

    Sleep as the most underrated prevention tool—and practical protocols

    They discuss how chronic short sleep compounds risk and can’t be repaid on weekends, though ‘sleep banking’ may help ahead of known deprivation. Louisa shares actionable tactics spanning supplements, temperature, circadian cues, and wind-down routines.

  16. 1:09:16 – 1:26:51

    Supplements for brain aging: omega-3, vitamin D—and a deep dive on creatine dosing & safety

    Louisa explains why omega-3 quality control matters and how DHA supports membranes and inflammation reduction. She then expands on vitamin D’s dementia associations and returns to creatine—higher brain-targeted dosing, timing, and kidney-lab misconceptions.

  17. 1:26:51 – 1:29:47

    Testing and early detection: lipoprotein(a), Alzheimer’s blood biomarkers, and processing-speed demo

    Louisa shares her frequent lab-testing routine and flags overlooked markers for cardiovascular risk. She also describes emerging blood tests for amyloid/tau and demonstrates quick cognitive assessments with color-word interference cards.

  18. 1:29:47 – 1:35:52

    5-minute neuro drills: tennis ball + eye patch to train reaction time and reserve

    Steven participates in coordination drills that increase difficulty by restricting vision and adding balance demands. Louisa connects these tasks to executive function, visual cortex training, and building cognitive reserve via challenging novelty.

  19. 1:35:52 – 1:44:38

    The ‘willpower’ brain: AMCC growth through doing hard things—and modern ‘brain rot’ risks

    Louisa and Steven explore the anterior midcingulate cortex (AMCC) as a resilience/will-to-live region that grows only under challenge. They tie this to goal-setting failures, sedentary comfort, and cognitive offloading to AI.

  20. 1:44:38 – 1:54:36

    Why Louisa is obsessed: women’s underrepresentation, caregiving burden, and her grandmother’s story

    Louisa explains her personal and political motivations—women’s symptoms being dismissed, lack of access, and systemic confusion in healthcare. Her grandmother’s experience with late-stage cancer catalyzed her drive to prevent avoidable suffering.

  21. 1:54:36 – 2:04:42

    Success, brain-state control, and closing reflections on meaning, faith, and hope

    The final stretch turns philosophical: what success means, the costs of obsession, and preserving memories as the core of a life well lived. They end with a faith discussion—how medicine can’t answer everything—and Steven’s closing appreciation.

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