Health Longevity Secrets

"There's no such thing as a weight problem — it's a weight symptom." Ben Azadi joins Robert Lufkin MD to dismantle the calorie myth and reveal the metabolic root cause underneath stubborn fat, fatigue, and disease.

Ben Azadi — functional health practitioner, founder of Keto Camp, and bestselling author of "Metabolic Freedom" — unpacks metabolic flexibility, diet variation, fasting, and why staying in ketosis forever can backfire. He previews his revised book "Keto Flex" (out July 21) and shares how he lost 80 pounds and rebuilt his metabolism from the inside out.

Chapters:

• 00:00 — Introduction
• 01:30 — Ben Azadi's 80-Pound Transformation Story
• 03:00 — What Was Actually Broken in His Metabolism
• 06:00 — "You Don't Have a Weight Problem, You Have a Weight Symptom"
• 07:30 — The 3 Percenters: Why 97% Chase Symptoms
• 08:30 — Ask the Right Question: How Do I Lower Insulin?
• 09:30 — Diet Variation: Why Cycling In and Out of Ketosis Works Better
• 12:00 — Feast Day vs Cheat Day: Flexing to Healthy Carbs
• 13:30 — Warning Signs You've Stayed in Keto Too Long
• 15:00 — Hormesis, Stress, and the Post-Menopause Caveat
• 16:30 — Using Heart Rate Variability to Dial In Your Stressors
• 18:00 — The Carnivore "Toxin Terminator" and Plant Compounds
• 22:30 — Chapter 9: A Customized Keto Plan for Women
• 25:30 — Fasting, Autophagy, and mTOR Balance
• 28:30 — How a 48-Hour Fast Resensitizes Your Dopamine Receptors
• 30:00 — Where People Get Fasting Wrong (Don't Forget to Feast)
• 33:00 — Metrics That Track Real Progress (Glucose, CGM, Oura)
• 34:30 — AI, Wearables, and the End of One-Size-Fits-All Diets
• 37:30 — What's New in the Revised Keto Flex
• 40:30 — Metabolic Freedom vs Keto Flex: Which Book First?
• 42:00 — Final Message: Identify the Interference, Let the Body Heal

Key takeaways:

• Weight is a symptom, not the problem — chase the root cause (insulin, inflammation, hormones), not the number on the scale.
• Metabolic flexibility beats rigid dieting: cycling in and out of ketosis with feast days keeps the body adaptive.
• Staying in ketosis indefinitely can backfire — watch for warning signs and build in strategic carb refeeds.
• Hormetic stressors (fasting, cold, exercise) help — but dose them to your recovery, tracked via HRV and tools like the Oura ring.
• A 48-hour fast can resensitize dopamine D2 receptors and reset reward signaling.
• Women often need a cyclical, customized keto approach — one-size-fits-all fails.

Studies & sources:

• Fasting and dopamine D2 receptor availability — Dunn et al., Diabetes Care 2012 — diabetesjournals.org
• Ketogenic diet raises glutathione (hormesis / antioxidant defense) — Napolitano et al., Metabolites 2020 — pmc.ncbi.nlm.nih.gov
• Ben Azadi's revised book "Keto Flex" (bonuses) — ketoflexbook.com

Dr. Lufkin's book "Lies I Taught in Medical School": robertlufkinmd.com/lies

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What if a single nerve in your ear could shift you out of fight-or-flight in 10 minutes? Jane Ollis explains why your vagus nerve and HRV may be the most overlooked levers for stress, sleep, and longevity.

In this episode of Health Longevity Secrets, Robert Lufkin MD sits down with Jane Ollis — founder and CEO of Sona, medical biochemist with a career across NASA, Oxford, and the NHS — to unpack the science of the vagus nerve, heart rate variability (HRV), and the autonomic nervous system. Jane breaks down why HRV is one of the strongest predictors of all-cause mortality, why a tiny patch of "fish gill pipework" in your outer ear is the key to calm, and how Sona's AI-powered closed-loop vagus nerve stimulator personalizes a 10-minute daily protocol to retrain a nervous system stuck in chronic sympathetic overdrive.

CHAPTERS:

KEY TAKEAWAYS:

STUDIES & SOURCES:

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The same glucosamine pill millions take for joint pain may protect a healthy brain — and accelerate Alzheimer's in a brain already in decline. Here's the science.

In this episode of Health Longevity Secrets, Robert Lufkin MD breaks down the 2026 plot twist on glucosamine and dementia: why a supplement once hailed as a longevity hack now carries an Alzheimer's warning, and why the answer comes down to one thing — the state of your metabolism. The same molecule helped the metabolically healthy and may have harmed the metabolically broken. The supplement didn't change; the soil it landed on did.

Chapters:

• 00:00 — Introduction
• 00:39 — The Supplement Everyone Trusted
• 01:06 — UK Biobank: Glucosamine and 15% Lower Death Risk
• 01:38 — Why Glucosamine Looked Like a Longevity Hack
• 02:48 — The 2026 Plot Twist: Nature Metabolism Study
• 03:53 — Alzheimer's Mice and the Glucosamine Pathway
• 04:13 — How Sugar Tagging (Glycosylation) Explains Both
• 04:57 — Hyperglycosylation in the Alzheimer's Brain
• 05:34 — The Honest Caveat: Association vs Causation
• 06:55 — The Takeaway: Metabolic Health Decides Everything

Key takeaways:

• In healthy, cognitively normal adults, regular glucosamine use has been tied to lower all-cause mortality and lower risk of dementia — especially vascular dementia.
• A June 2026 University of Florida study in Nature Metabolism found the opposite signal in sick brains: in people with mild cognitive impairment, glucosamine use was associated with a 25% higher likelihood of progressing to Alzheimer's, and a 25% higher death risk in those already diagnosed.
• In Alzheimer's mice, glucosamine made memory worse; blocking the same sugar-tagging pathway made it better.
• The mechanism is metabolic: glucosamine feeds glycosylation (sugar-tagging of proteins). A healthy brain handles it fine; an Alzheimer's brain is already hyperglycosylated, so adding more is "pouring gasoline on the fire."
• This is association, not proof of cause — and the literature is genuinely mixed. If you're healthy, it's not a fire alarm. If you or a loved one has MCI or dementia, talk to your physician before the next refill.

Studies & sources:

• Hawkinson et al., "Hyperglycosylation is a metabolic driver of Alzheimer's disease," Nature Metabolism 2026 (University of Florida)
• University of Florida news release on the glucosamine–dementia finding
• Zheng et al., "Association of regular glucosamine use with incident dementia," BMC Medicine 2023 (UK Biobank)
• Habitual glucosamine use, APOE genotypes, and cause-specific dementia in older adults (UK Biobank)
• Li et al., "Associations of regular glucosamine use with all-cause and cause-specific mortality," Annals of the Rheumatic Diseases 2020 (UK Biobank)

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What if the pain you've been trying to escape is actually the fuel you've been looking for? Recording artist Ben Barbic walked away from alcohol, nicotine, and blood pressure medications at 28 — and built a 15-year operating system for resilience.

In this episode of Health Longevity Secrets, Robert Lufkin MD sits down with Ben Barbic — chart-climbing reggae and hip-hop recording artist, San Jose-based studio owner of Where Dreams Sail Studios, and author of the new memoir Rise and Climb: Finding Purpose Through Pain (Skyhorse Publishing / Simon & Schuster, October 15). They talk about the night his childhood home burned down, the 1989 Loma Prieta earthquake that destroyed his family's second house, the teddy bear from his young son that triggered his sobriety pivot, the redwood-tree metaphor on the book cover, kirtan and chakra meditation as his entry point to a calmer mind, and how very small daily choices — a single five-minute habit — compound into a completely different life.

CHAPTERS:

• 00:00 — Introduction
• 01:08 — Meet Ben Barbic: Recording Artist, Author, and Self-Builder
• 02:00 — Childhood Trauma: When the House Burned Down
• 03:00 — The 1989 Loma Prieta Earthquake and the Power of Rebuilding
• 04:01 — Why Music Became His First Anchor as a Child
• 05:02 — The 28th Birthday Pivot: Walking Away from Alcohol and Nicotine
• 06:02 — The Subtraction-Then-Addition Method for Habit Change
• 07:03 — Quitting Blood Pressure Medications and Treating the Root Cause
• 09:04 — The Teddy Bear Moment: How His Son Triggered the Pivot
• 12:04 — Why Tiny Five-Minute Habits Beat Big Resolutions
• 14:05 — The First Three Habits He Added After Sobriety
• 17:07 — Kirtan and Chakra Meditation: A Beginner's Path
• 19:08 — Music, Memory, and the Brain's Storytelling Pathways
• 24:09 — Writing a Memoir: The Hardest Part Is Vulnerability
• 27:10 — Three Lessons for Self-Builders and High Performers
• 30:11 — The Redwood Tree Metaphor on the Book Cover
• 31:11 — Victim Mindset vs Agency: How to Reframe Adversity
• 32:11 — Redefining Success: From Catching Up to Contributing
• 36:12 — The Empty-Nest Pivot and the Next 5 Years
• 38:13 — Final Thoughts: Pursue What Gives You Purpose

KEY TAKEAWAYS:

• Subtract before you add — remove the drainers first, then layer in new habits.
• Hypertension is rarely solved by stacking more meds — change the upstream inputs and the numbers follow.
• The pivot moment usually has a single concrete trigger.
• Five minutes is enough — compounding does the rest.
• Kirtan plus chakra meditation is a friendly entry point for musicians.
• Redwood trees regrow tall around old burn scars.
• Define success by what you can contribute, not by who you can catch up to.

LINKS & SOURCES:

• Rise and Climb: Finding Purpose Through Pain by Ben Barbic
• Ben's music catalog
• 1989 Loma Prieta earthquake background

📖 Dr. Lufkin's book Lies I Taught in Medical School: https://robertlufkinmd.com/lies/
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Creatine causes cancer to spread — that headline is built on a real mouse study. But what does the human data actually say? In this solo explainer, Dr. Robert Lufkin breaks down both halves of the science behind the most studied supplement on the planet.

He walks through the 2021 mouse metastasis study behind the viral claim, the surprising evidence that creatine actually powers the immune cells that HUNT cancer (CD8 T cells and, per new UCLA research, dendritic cells), and what the human data — HCAs, NHANES, and the 2025 safety review — really shows. The verdict is more nuanced, and more reassuring, than the headline suggests.

Chapters:

• 00:00 — Introduction
• 00:46 — Why This Question Exists
• 01:32 — The Scary Half (2021 Study)
• 02:17 — How Creatine Fuels Tumor Spread
• 03:03 — Creatine Fights Cancer Too
• 03:48 — UCLA June 2026 Dendritic Cells
• 04:35 — Tumor Suppressor or Fuel?
• 05:21 — What Human Data Shows (HCAs)
• 06:08 — NHANES & 2025 Safety Review
• 06:55 — The Honest Caveat
• 07:42 — The Takeaway

Key takeaways:

• The scary headline comes from a 2021 mouse study where dietary creatine promoted metastasis via the MPS1 → SMAD2/3 → TGF-beta pathway — in mice with established, aggressive tumors.
• The same metabolism fuels your immune system: creatine is essential for CD8 "killer" T cells and the dendritic cells that direct them.
• In a controlled human trial, creatine did NOT drive carcinogen (HCA) formation.
• NHANES population data links higher dietary creatine to LOWER cancer risk, and the 2025 safety review calls the human cancer-risk claim "not substantiated."
• Healthy adults: the human evidence does not support avoiding creatine. Active or metastatic cancer: pause and talk to your oncologist. Always choose third-party tested creatine monohydrate.

Studies & sources:

• Zhang et al., Cell Metabolism 2021 — Creatine promotes cancer metastasis via Smad2/3
• Geng et al., Int. J. Mol. Sci. 2024 — The multifaceted role of creatine metabolism
• Di Biase et al., J. Exp. Med. 2019 — Creatine and CD8 T cell antitumor immunity
• Kang et al., iScience 2026 (UCLA) — Creatine and dendritic cell activation
• Pereira et al., Amino Acids 2015 — Creatine and heterocyclic amines
• NHANES 2017–2020 — Dietary creatine and cancer risk
• Antonio et al., Frontiers in Nutrition 2025 — Common safety concerns regarding creatine

📖 Dr. Lufkin's book "Lies I Taught in Medical School": https://robertlufkinmd.com/lies/

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Colorectal cancer is now the #1 cancer killer in Americans under 50 — and roughly 60% of cases are diagnosed at stage III or IV. What if your toilet could spot the earliest sign years before symptoms?

Robert Lufkin MD sits down with Scott Hickle, co-founder and CEO of Throne Science, to talk about the first AI-powered smart toilet — a hands-free, daily monitor that detects fecal occult blood, tracks gut microbiome shifts, measures hydration and prostate health via sonouroflowmetry, and uses AI to coach behavior change. We unpack why your waste is the richest health signal you currently ignore, the Warren Buffett car-sensor analogy for continuous health monitoring, the 46% hemorrhoid risk from phone use on the toilet, and Throne's 10-year vision to be the first alarm system for cancer.

CHAPTERS

• 00:00 — Introduction
• 01:14 — Meet Scott Hickle: From Mechanical Engineer to Smart Toilet CEO
• 03:00 — How a Call With His Mom Sparked the Throne Idea
• 05:02 — Why Your Waste Is the Richest Health Signal You Ignore
• 07:02 — How Modern Plumbing Made Stool Analysis Taboo
• 10:02 — Fecal Occult Blood: The Earliest Sign of Colorectal Cancer
• 13:02 — Why Colorectal Cancer Is Now the #1 Cancer Killer Under 50
• 14:30 — The Warren Buffett Car Sensor Analogy for Continuous Health Monitoring
• 16:03 — Throne vs Gut Microbiome Tests: A CGM for Your Gut
• 18:03 — Stress Is the #1 Driver of Gut Health (And Other Self-Experiments)
• 22:04 — The 46% Hemorrhoid Risk From Phone Use on the Toilet
• 24:04 — How the Throne Hardware and AI Software Actually Work
• 27:00 — Sonouroflowmetry: Measuring Prostate Health From the Sound of Your Pee
• 29:05 — Privacy, Data Security, and Camera Placement
• 31:05 — Medical Advisors, Clinical Studies, and FDA Pathway
• 34:06 — The AI Gut Health Coach and Behavior Change
• 37:06 — The 10-Year Vision: A First Alarm System for Cancer
• 40:07 — Where to Pre-Order Throne (thronescience.com)

KEY TAKEAWAYS

• Colorectal cancer is the only top-five cancer whose mortality has risen every year since 2005 — and it's now the #1 cancer killer in Americans under 50.
• Polyps take 7–10 years to become tumors. Colorectal cancer is one of the few cancers we know how to cure before it becomes cancer — but only 3–6% of people return the at-home FIT test.
• Visible blood in stool requires 40,000–50,000 µg of hemoglobin per gram. The FIT test detects 10–20 µg/g — about 8,000× more sensitive than what your eye can see.
• A single bleed could be a hemorrhoid or food poisoning. A monotonic four-to-six-month rising trend is the pattern that signals colorectal cancer — and you can only see patterns with continuous monitoring.
• Stress is the #1 driver of gut health in Scott's own n=1 self-experiments — bigger than any food, supplement, or fiber intervention he's tried.
• Sitting on the toilet with a phone for more than 5 minutes is associated with a 46% increased risk of hemorrhoids (Inan et al., PLOS One 2025).

STUDIES & SOURCES MENTIONED

• American Cancer Society / JAMA, January 2026 — Cancer mortality decline under 50 — https://pressroom.cancer.org/under-50-mortality-declines
• Inan et al., PLOS One 2025 — Smartphone use on the toilet and hemorrhoid risk — https://pubmed.ncbi.nlm.nih.gov/40901789/
• Scott Hickle, TEDxBoston — "The History and Power of Poop" — https://www.youtube.com/watch?v=v42gznW6cuA
• Dr. David Rubin, MD, University of Chicago (Throne medical advisor) — 

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What if the longevity revolution isn't really a science problem, but a human one we're completely unprepared for?

In this episode of Health Longevity Secrets, Robert Lufkin MD sits down with David Donnelly — the award-winning filmmaker behind "Forever Young" (winner of the Mill Valley Film Festival Audience Award). David spent three years across three continents embedded with the world's leading longevity scientists — the Buck Institute, Dr. Eric Verdin, Dr. Steve Horvath, and more — and came back with the uncomfortable question no one wants to ask: do we actually want to live forever in the world we've built?

CHAPTERS:
00:00 — Introduction
02:32 — From Pre-Med to Filmmaker: Donnelly's Origin Story
04:58 — Dr. Eric Verdin on Multifactorial Aging
09:34 — The 30-Minute Walk That Cuts Disease 40%
10:33 — Why 93% of How You Age Is Lifestyle
13:50 — The Horvath Epigenetic Clock Explained
14:14 — Healthspan vs Lifespan: The 122-Year Cap
14:54 — Age Looping and Epigenetic Reprogramming
15:57 — Bryan Johnson and the Wild Side
16:29 — Do We Actually Want to Live Forever?
19:03 — The Loneliness Epidemic Is a Pack a Day
21:42 — Death Doula Katie Rose and the Death Positive Movement
24:29 — Reframing Retirement for 40 More Years
28:08 — Science vs Commercial Hype in Longevity
30:49 — Why Normal Bloodwork Isn't Good Bloodwork
31:33 — What a True Longevity Clinic Does
33:58 — Meet the Producers: Dr. Johnson and Dr. Lewis
42:06 — Final Takeaway: Start the Journey

KEY TAKEAWAYS:
• Only ~7-10% of longevity is genetic — 93% is lifestyle and epigenetics
• A 30-minute walk a day reduces chronic disease risk by 30-40%
• The Horvath epigenetic clock makes biological age measurable in real time
• Current lifespan is biologically capped near 122 — the real opportunity is healthspan
• Chronic loneliness harms your body at the same rate as smoking a pack a day
• "Normal" bloodwork often means sick — optimal is a different number
• The existential questions — meaning, purpose, death — are missing from the longevity conversation

STUDIES & SOURCES MENTIONED:

• "Forever Young" — the documentary
• Dr. Eric Verdin — Buck Institute for Research on Aging
• Dr. Steve Horvath — epigenetic clock (Nature Aging)
• US Surgeon General Advisory on loneliness (2023)
• OSK partial reprogramming and lifespan extension (Nature, 2020)
• Ray Kurzweil — "The Singularity Is Nearer" (2024)

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There's a single number on your routine blood test that predicts your risk of dying from cancer, heart disease, and infection better than cholesterol — and an FDA-approved drug may now move it.

In this Health Longevity Secrets explainer, Robert Lufkin MD breaks down lymphopenia, the IL-15 cytokine, and ANKTIVA (nogapendekin alfa inbakicept) — the first FDA-approved IL-15 super-agonist and possibly one of the most important longevity drugs of the decade.

CHAPTERS:
00:00 — Introduction: The Blood Test Number Better Than Cholesterol
00:35 — What Is Lymphopenia and Why It Matters
01:50 — Immunosenescence: Why Your T Cells Decline After Age 20
02:30 — The Mortality Data: Three Studies on Lymphopenia
03:20 — Copenhagen Study: 63% Higher All-Cause Mortality
03:50 — Coronary Angiography Study: Hazard Ratio 1.97
04:25 — Enter IL-15: The Cytokine That Builds Killer Immune Cells
05:15 — IL-15 as a Myokine: Why Resistance Training Protects Against Cancer
06:00 — Four Hallmarks of Aging Hit By One Molecule
06:30 — ANKTIVA Explained: The IL-15 Super-Agonist
07:00 — FDA Approval, Bladder Cancer, and the Soon-Shiong Reframe
08:15 — Is ANKTIVA a Longevity Drug? The Bullish Case
09:00 — The Skeptical Case: Why We Don't Know Yet
10:15 — What You Can Do Today: Track Your Number, Raise IL-15 Naturally
11:30 — Final Take and Closing

KEY TAKEAWAYS:

• Lymphopenia (absolute lymphocyte count below 1,500/μL) predicts all-cause mortality better than cholesterol in multiple large cohort studies
• IL-15 expands NK cells and CD8+ T cells — the same cells that clear senescent "zombie" cells and patrol for cancer
• Resistance training is the single strongest known endogenous IL-15 stimulus; your muscle signals your immune system to stay young
• ANKTIVA is the first FDA-approved IL-15 super-agonist (April 2024) — currently for bladder cancer but being reframed as a lymphopenia treatment
• IL-15 hits four hallmarks of aging at once: immunosenescence, senescent cell accumulation, chronic inflammation, and sarcopenia
• Honest take: exciting hypothesis with FDA approval, but zero human longevity trials yet — watch this space

STUDIES & SOURCES MENTIONED:

• Zidar et al., JAMA Network Open 2019 — Lymphopenia and mortality in 31,178 US adults (NHANES)
• Warny et al., CMAJ 2020 — Copenhagen General Population Study, lymphopenia in 108,135 adults
• Bawamia et al., Cardiology Journal 2022 — Lymphopenia and 8-year mortality in 15,179 coronary angiography patients
• FDA approval, April 22, 2024 — Nogapendekin alfa inbakicept-pmln (ANKTIVA) for BCG-unresponsive non-muscle invasive bladder cancer

Watch the full video on YouTube: https://youtu.be/220KHIdFCwg

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What if the same symptoms we see in combat veterans — the broken sleep, the irritability, the brain fog — were already quietly spreading through the healthiest, highest-performing people you know?

In this episode of Health Longevity Secrets, Robert Lufkin MD sits down with Neil Markey — a former US Army Special Operations captain from the 75th Ranger Regiment turned McKinsey consultant, now the co-founder and CEO of Beckley Retreats and a Harvard Chan School student researching psychedelic-assisted integrated health. Neil walks us through his own journey out of post-combat trauma, the neuroscience of why psilocybin opens a rare window of neuroplasticity in the adult brain, and why he believes this work belongs upstream as preventative medicine for the well.

CHAPTERS:
00:00 — Introduction
02:34 — From Mathlete to 75th Ranger Regiment
02:50 — Iraq, WMDs, and the Pretense of War
03:16 — Two Afghanistan Tours as a Ranger Captain
07:14 — How Meditation Reached Him First
11:49 — The Peer Group Where Everyone Was Secretly Breaking
12:25 — Why the Environment Always Wins
15:15 — The Neuroplasticity Window Psychedelics Open
17:18 — Amanda Feilding and the Beckley Foundation
18:20 — Why Set and Setting Decide the Outcome
20:58 — The Fresh Snowfall Metaphor for the Brain
24:09 — Preventative Medicine for the Well, Not Just the Broken
32:18 — The Real Safety Profile of Psilocybin
33:27 — Beckley as a Public Benefit Corporation
39:38 — Bringing Rigor at Harvard Chan
40:12 — Jamaica, the Netherlands, and the US Legal Path
45:04 — A Green Beret's Son Finally Came to Him
46:34 — Why Awe Beats Burnout

KEY TAKEAWAYS:
• Psilocybin opens a measurable window of neuroplasticity in the adult brain
• Set, setting, and integration determine outcomes far more than the compound itself
• Psilocybin is non-toxic with low incident rates when used in controlled environments
• The "betterment of the well" use case may be as transformative as clinical treatment
• Oregon and Colorado have legalized supervised use; New Mexico and Massachusetts are next
• Chronic stress in high-performers replicates many PTSD-like symptoms
• Awe, empathy, and connection are measurable outcomes — and they beat burnout

STUDIES & SOURCES MENTIONED:

• Neil Markey — Beckley Retreats (use code LUFKIN for 10% off)
• Beckley Foundation — Amanda Feilding's psychedelic research institute
• Dr. Robin Carhart-Harris — UCSF Psychedelics Division
• Johns Hopkins Center for Psychedelic & Consciousness Research
• Oregon Psilocybin Services — first US regulated program
• JAMA Psychiatry meta-analysis on psilocybin for depression (2023)
• Harvard T.H. Chan School of Public Health

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