Tim Ferriss: Bestselling Author

Human Guinea Pig

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#825: Dr. Dominic D’Agostino — All Things Ketones, How to Protect the Brain and Boost Cognition, Sardine Fasting, Diet Rules, Revisiting Metformin and Melatonin, and More

The Tim Ferriss Show

Tim Ferriss is a self-experimenter and bestselling author, best known for The 4-Hour Workweek, which has been translated into 40+ languages. Newsweek calls him "the world's best human guinea pig," and The New York Times calls him "a cross between Jack Welch and a Buddhist monk." In this show, he deconstructs world-class performers from eclectic areas (investing, chess, pro sports, etc.), digging deep to find the tools, tactics, and tricks that listeners can use.

Dr. Dominic D’Agostino (<a href="https://x.com/DominicDAgosti2" rel="noopener noreferrer" target="_blank">@DominicDAgosti2</a>) is a tenured associate professor in the Department of Molecular Pharmacology and Physiology at the University of South Florida Morsani College of Medicine and a Visiting Senior Research Scientist at the Institute for Human and Machine Cognition.This episode is brought to you by: <a href="https://helixsleep.com/tim" rel="noopener noreferrer" target="_blank">Helix Sleep</a> premium mattresses: <a href="https://helixsleep.com/tim" rel="noopener noreferrer" target="_blank">https://HelixSleep.com/Tim</a> (27% off all mattress orders)<a href="https://livemomentous.com/tim" rel="noopener noreferrer" target="_blank">Momentous</a> high-quality creatine: <a href="https://livemomentous.com/tim" rel="noopener noreferrer" target="_blank">https://livemomentous.com/tim</a> (code TIM for up to 35% off)<a href="https://drinkag1.com/Tim" rel="noopener noreferrer" target="_blank">AG1</a> all-in-one nutritional supplement: <a href="https://drinkag1.com/Tim" rel="noopener noreferrer" target="_blank">https://DrinkAG1.com/Tim</a> (1-year supply of Vitamin D plus 5 free AG1 travel packs)Timestamps:[00:00:00] Start.[00:14:43] Why I'm interested in ketogenic strategies for neurodegenerative prevention.[00:16:18] Mary and Steve Newport's ketone-linked temporary cognitive improvements.[00:18:18] A mechanisms overview for Alzheimer's/dementia.[00:21:25] The immune system as longevity's "fifth horseman" — and why metabolic control is key.[00:22:04] How to measure ketones and GKI.[00:23:00] Fasting vs. ketogenic diet.[00:24:18] There's nothing fishy about sardine fasting.[00:28:32] My hiatal hernia discovery and increased cancer risk concerns.[00:30:04] HSCRP as a superior biomarker to LDL for cardiovascular risk.[00:31:57] Glucose tolerance testing revelations and CGM importance.[00:31:57] Upgrading the metabolic machinery through keto without getting bored.[00:42:07] What do do if you, like Dom and me, are among the 30% who suffer from cholesterol hyperabsorption.[00:43:42] Dom's day-to-day diet regimen.[00:45:56] How Dom optimizes his aging dogs with ketones, SARMs, and supplements.[00:51:30] Supplementing for sleep disruption while fasting.[00:55:41] Why Dom doesn't have misgivings about melatonin.[00:59:15] Shingles prevention through fasting protocols.[01:00:15] Immune system modulation: Innate vs. adaptive, vegan vs. ketogenic.[01:03:54] Dom at 50-something: Current meal timing and composition.[01:05:57] Blue zone observations: Greek and Sardinian longevity habits.[01:08:16] Ketogenic diet initiation tips: MCT, electrolytes, and fasted cardio.[01:15:18] Ketone metabolic therapy for cancer.[01:18:15] The metabolic psychiatry revolution.[01:22:10] The soothing effects of hyperbaric oxygen and ketosis on seizure sufferers.[01:28:27] Metformin vs. berberine.[01:31:43] The low-dose neuroprotective potential of GLP-1 drugs.[01:34:58] NAD research: MIB-626 and stabilized forms for mitochondrial health.[01:39:48] Idebenone, CoQ10, and the Deanna protocol for ALS.[01:42:05] Dom's supplement short list: CoQ10, creatine, ketones, vitamin D, melatonin.[01:44:43] KetoNutrition.org, Metabolic Health Summit, Audacious Nutrition, veteran-focused research protocols, and other parting thoughts.*Show notes for this episode: <a href="https://tim.blog/2025/07/24/dr-rhonda-patrick/" rel="noopener noreferrer" target="_blank">https://tim.blog/2025/07/24/dr-rhonda-patrick/</a>For show notes and past guests on <a href="https://tim.blog/podcast" rel="noopener noreferrer" target="_blank">The Tim Ferriss Show</a>, please visit <a href="https://tim.blog/podcast/?utm_source=podcast&utm_medium=podcast&utm_campaign=podcast-description" rel="noopener noreferrer" target="_blank">tim.blog/podcast</a>.For deals from sponsors of <a href="https://tim.blog/podcast" rel="noopener noreferrer" target="_blank">The Tim Ferriss Show</a>, please visit <a href="https://tim.blog/podcast-sponsors" rel="noopener noreferrer" target="_blank">tim.blog/podcast-sponsors</a>Sign up for Tim’s email newsletter (5-Bullet Friday) at <a href="https://go.tim.blog/5-bullet-friday-1/" rel="noopener noreferrer" target="_blank">tim.blog/friday</a>.For transcripts of episodes, go to <a href="https://tim.blog/transcripts" rel="noopener noreferrer" target="_blank">tim.blog/transcripts</a>.Discover Tim’s books: <a href="https://tim.blog/books" rel="noopener noreferrer" target="_blank">tim.blog/books</a>.Follow Tim:Twitter: <a href="https://twitter.com/tferriss" rel="noopener noreferrer" target="_blank">twitter.com/tferriss</a> Instagram: <a href="https://instagram.com/timferriss/" rel="noopener noreferrer" target="_blank">instagram.com/timferriss</a>YouTube: <a href="https://www.youtube.com/timferriss" rel="noopener noreferrer" target="_blank">youtube.com/timferriss</a>Facebook: <a href="https://www.facebook.com/TimFerriss/" rel="noopener noreferrer" target="_blank">facebook.com/timferriss</a> LinkedIn: <a href="http://linkedin.com/in/timferriss" rel="noopener noreferrer" target="_blank">linkedin.com/in/timferriss</a>See Privacy Policy at <a href="https://art19.com/privacy" rel="noopener noreferrer" target="_blank">https://art19.com/privacy</a> and California Privacy Notice at <a href="https://art19.com/privacy#do-not-sell-my-info" rel="noopener noreferrer" target="_blank">https://art19.com/privacy#do-not-sell-my-info</a>.

Tim Ferriss: Bestselling Author, Human Guinea Pig

Dr. Dominic D’Agostino (<a href="https://x.com/DominicDAgosti2" rel="noopener noreferrer" target="_blank">@DominicDAgosti2</a>) is a tenured associate professor in the Department of Molecular Pharmacology and Physiology at the University of South Florida Morsani College of Medicine and a Visiting Senior Research Scientist at the Institute for Human and Machine Cognition.This episode is brought to you by: <a href="https://helixsleep.com/tim" rel="noopener noreferrer" target="_blank">Helix Sleep</a> premium mattresses: <a href="https://helixsleep.com/tim" rel="noopener noreferrer" target="_blank">https://HelixSleep.com/Tim</a> (27% off all mattress orders)<a href="https://livemomentous.com/tim" rel="noopener noreferrer" target="_blank">Momentous</a> high-quality creatine: <a href="https://livemomentous.com/tim" rel="noopener noreferrer" target="_blank">https://livemomentous.com/tim</a> (code TIM for up to 35% off)<a href="https://drinkag1.com/Tim" rel="noopener noreferrer" target="_blank">AG1</a> all-in-one nutritional supplement: <a href="https://drinkag1.com/Tim" rel="noopener noreferrer" target="_blank">https://DrinkAG1.com/Tim</a> (1-year supply of Vitamin D plus 5 free AG1 travel packs)Timestamps:[00:00:00] Start.[00:14:43] Why I'm interested in ketogenic strategies for neurodegenerative prevention.[00:16:18] Mary and Steve Newport's ketone-linked temporary cognitive improvements.[00:18:18] A mechanisms overview for Alzheimer's/dementia.[00:21:25] The immune system as longevity's "fifth horseman" — and why metabolic control is key.[00:22:04] How to measure ketones and GKI.[00:23:00] Fasting vs. ketogenic diet.[00:24:18] There's nothing fishy about sardine fasting.[00:28:32] My hiatal hernia discovery and increased cancer risk concerns.[00:30:04] HSCRP as a superior biomarker to LDL for cardiovascular risk.[00:31:57] Glucose tolerance testing revelations and CGM importance.[00:31:57] Upgrading the metabolic machinery through keto without getting bored.[00:42:07] What do do if you, like Dom and me, are among the 30% who suffer from cholesterol hyperabsorption.[00:43:42] Dom's day-to-day diet regimen.[00:45:56] How Dom optimizes his aging dogs with ketones, SARMs, and supplements.[00:51:30] Supplementing for sleep disruption while fasting.[00:55:41] Why Dom doesn't have misgivings about melatonin.[00:59:15] Shingles prevention through fasting protocols.[01:00:15] Immune system modulation: Innate vs. adaptive, vegan vs. ketogenic.[01:03:54] Dom at 50-something: Current meal timing and composition.[01:05:57] Blue zone observations: Greek and Sardinian longevity habits.[01:08:16] Ketogenic diet initiation tips: MCT, electrolytes, and fasted cardio.[01:15:18] Ketone metabolic therapy for cancer.[01:18:15] The metabolic psychiatry revolution.[01:22:10] The soothing effects of hyperbaric oxygen and ketosis on seizure sufferers.[01:28:27] Metformin vs. berberine.[01:31:43] The low-dose neuroprotective potential of GLP-1 drugs.[01:34:58] NAD research: MIB-626 and stabilized forms for mitochondrial health.[01:39:48] Idebenone, CoQ10, and the Deanna protocol for ALS.[01:42:05] Dom's supplement short list: CoQ10, creatine, ketones, vitamin D, melatonin.[01:44:43] KetoNutrition.org, Metabolic Health Summit, Audacious Nutrition, veteran-focused research protocols, and other parting thoughts.*Show notes for this episode: https://tim.blog/2025/09/03/dr-dominic-dagostino-all-things-ketones/For show notes and past guests on <a href="https://tim.blog/podcast" rel="noopener noreferrer" target="_blank">The Tim Ferriss Show</a>, please visit <a href="https://tim.blog/podcast/?utm_source=podcast&utm_medium=podcast&utm_campaign=podcast-description" rel="noopener noreferrer" target="_blank">tim.blog/podcast</a>.For deals from sponsors of <a href="https://tim.blog/podcast" rel="noopener noreferrer" target="_blank">The Tim Ferriss Show</a>, please visit <a href="https://tim.blog/podcast-sponsors" rel="noopener noreferrer" target="_blank">tim.blog/podcast-sponsors</a>Sign up for Tim’s email newsletter (5-Bullet Friday) at <a href="https://go.tim.blog/5-bullet-friday-1/" rel="noopener noreferrer" target="_blank">tim.blog/friday</a>.For transcripts of episodes, go to <a href="https://tim.blog/transcripts" rel="noopener noreferrer" target="_blank">tim.blog/transcripts</a>.Discover Tim’s books: <a href="https://tim.blog/books" rel="noopener noreferrer" target="_blank">tim.blog/books</a>.Follow Tim:Twitter: <a href="https://twitter.com/tferriss" rel="noopener noreferrer" target="_blank">twitter.com/tferriss</a> Instagram: <a href="https://instagram.com/timferriss/" rel="noopener noreferrer" target="_blank">instagram.com/timferriss</a>YouTube: <a href="https://www.youtube.com/timferriss" rel="noopener noreferrer" target="_blank">youtube.com/timferriss</a>Facebook: <a href="https://www.facebook.com/TimFerriss/" rel="noopener noreferrer" target="_blank">facebook.com/timferriss</a> LinkedIn: <a href="http://linkedin.com/in/timferriss" rel="noopener noreferrer" target="_blank">linkedin.com/in/timferriss</a>See Privacy Policy at <a href="https://art19.com/privacy" rel="noopener noreferrer" target="_blank">https://art19.com/privacy</a> and California Privacy Notice at <a href="https://art19.com/privacy#do-not-sell-my-info" rel="noopener noreferrer" target="_blank">https://art19.com/privacy#do-not-sell-my-info</a>.

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#825: Dr. Dominic D’Agostino — All Things Ketones, How to Protect the Brain and Boost Cognition, Sardine Fasting, Diet Rules, Revisiting Metformin and Melatonin, and More

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