logo
episode-header-image
Aug 26
2h 23m

#824: What Most Has My Attention Right N...

Tim Ferriss: Bestselling Author, Human Guinea Pig
About this episode

Kevin J. Tracey, MD is president and CEO of the Feinstein Institutes for Medical Research at Northwell Health, a pioneer of vagus nerve research and author of the recent book, The Great Nerve: The New Science of the Vagus Nerve and How to Harness Its Healing Reflexes.

This episode is brought to you by:

Eight Sleep Pod Cover 5 sleeping solution for dynamic cooling and heating: EightSleep.com/Tim (use code TIM to get $350 off your very own Pod 5 Ultra.)

AG1 all-in-one nutritional supplement: https://DrinkAG1.com/Tim (1-year supply of Vitamin D plus 5 free AG1 travel packs with your first subscription purchase.)

Wealthfront high-yield cash account: https://Wealthfront.com/Tim (Start earning 3.75% Annual Percentage Yield (APY) from program banks on your short-term cash until you’re ready to invest. And when new clients open an account, they can get an extra fifty-dollar bonus with a deposit of five hundred dollars or more.) Terms & Conditions apply. The APY on cash deposits as of 09/26/25 is representative, subject to change, and requires no minimum. Tim Ferriss receives cash compensation from Wealthfront Brokerage LLC for advertising and holds a non-controlling equity interest in the corporate parent of Wealthfront Brokerage. See full disclosures here.

Timestamps:

00:00 Tim’s intro: why he dismissed vagus-nerve hype

06:34 What the vagus nerve actually is, plus common myths

11:31 Breaking news: FDA approval for SetPoint’s RA implant + Kelly Owens’s turnaround

21:11 Inflammation 101: when healing turns harmful

31:37 Bioelectronic medicine: from lab insight to real devices

55:26 TNF, IL-1, and IL-6: immune drivers and what VNS modulates

56:06 Exercise & recovery: vagal signals, IL-6, and adaptation

56:30 Cold exposure & breathwork: sympathetic spike, parasympathetic payoff

59:04 Chronic inflammation today: prevalence, diagnostics, and uncertainty

59:53 Autoimmunity: genes, environment, infections

01:01:08 Stress hormones, personality traits, and metabolic fallout

01:05:41 VNS tech landscape: implants, focused ultrasound, and what’s just TENS

01:11:14 Ear maps, revisited: the real science behind auricular stimulation

01:27:52 Ulf Andersson: auricular TENS, famotidine, and a depression turnaround

01:36:48 Depression & inflammation: where VNS helps (and where it doesn’t)

01:41:38 Body-brain loop: how inflammation signals ride the vagus nerve

01:42:56 Why VNS can lift mood: a working theory

01:43:22 Ulf’s setup: electrode placement and twice-daily routine

01:44:37 Acupuncture, fertility, and plausible vagal links

01:47:23 Chronic pain through an inflammation lens

01:48:34 Neural “engrams”: how the brain can store inflammatory memories

02:02:35 Cervical TENS vs. true VNS: mechanisms and open questions

02:12:15 On stage with the Dalai Lama: blue energy and two vagus nerves

02:16:55 Closing thoughts: self-care vs. medical devices, and what’s next

*

For show notes and past guests on The Tim Ferriss Show, please visit tim.blog/podcast.

For deals from sponsors of The Tim Ferriss Showplease visit tim.blog/podcast-sponsors

Sign up for Tim’s email newsletter (5-Bullet Friday) at tim.blog/friday.

For transcripts of episodes, go to tim.blog/transcripts.

Discover Tim’s books: tim.blog/books.

Follow Tim:

Twittertwitter.com/tferriss 

Instagraminstagram.com/timferriss

YouTubeyoutube.com/timferriss

Facebookfacebook.com/timferriss 

LinkedIn: linkedin.com/in/timferriss

Past guests on The Tim Ferriss Show include Jerry SeinfeldHugh JackmanDr. Jane GoodallLeBron JamesKevin HartDoris Kearns GoodwinJamie FoxxMatthew McConaugheyEsther PerelElizabeth GilbertTerry CrewsSiaYuval Noah HarariMalcolm GladwellMadeleine AlbrightCheryl StrayedJim CollinsMary Karr, Maria PopovaSam HarrisMichael PhelpsBob IgerEdward NortonArnold SchwarzeneggerNeil StraussKen BurnsMaria SharapovaMarc AndreessenNeil GaimanNeil de Grasse TysonJocko WillinkDaniel EkKelly SlaterDr. Peter AttiaSeth GodinHoward MarksDr. Brené BrownEric SchmidtMichael LewisJoe GebbiaMichael PollanDr. Jordan PetersonVince VaughnBrian KoppelmanRamit SethiDax ShepardTony RobbinsJim DethmerDan HarrisRay DalioNaval RavikantVitalik ButerinElizabeth LesserAmanda PalmerKatie HaunSir Richard BransonChuck PalahniukArianna HuffingtonReid HoffmanBill BurrWhitney CummingsRick RubinDr. Vivek MurthyDarren AronofskyMargaret AtwoodMark ZuckerbergPeter ThielDr. Gabor MatéAnne LamottSarah SilvermanDr. Andrew Huberman, and many more.

See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

Up next
Yesterday
#830: Nick Kokonas and Richard Thaler, Nobel Prize Laureate — Realistic Economics, Avoiding The Winner’s Curse, Using Temptation Bundling, and Going Against the Establishment
Richard H. Thaler is the 2017 recipient of the Nobel Memorial Prize in Economic Sciences for his contributions to behavioral economics and the Charles R. Walgreen Distinguished Service Professor of Behavioral Science and Economics at the University of Chicago Booth School of Busi ... Show More
1h 57m
Sep 30
#829: James Nestor — Breathing Protocols to Reboot Your Health, Fix Your Sleep, and Boost Performance
James Nestor is a science journalist and the author of the international bestseller Breath: The New Science of a Lost Art, with more than three million copies sold in 44 languages.This episode is brought to you by:Helix Sleep premium mattresses: https://HelixSleep.com/Tim (27% of ... Show More
1h 50m
Sep 24
#828: David Senra — How Extreme Winners Think and Win: Lessons from 400+ of History’s Greatest Founders and Investors (Including Buffett, Munger, Rockefeller, Jobs, Ovitz, Zell, and Names You Don’t Know But Should)
David Senra is the host of the Founders podcast. For the past nine years, David has intensely studied the life and work of hundreds of history’s greatest entrepreneurs. His new podcast, David Senra, showcases conversations with the best-of-the-best living founders and extreme win ... Show More
2h 55m
Recommended Episodes
Aug 22
Mindreading with Jean-Rémi King
What would it take to actually read someone’s mind? Neil deGrasse Tyson and co-hosts Chuck Nice and Gary O’Reilly explore the science and ethics of decoding thoughts with Jean-Rémi King, a neuroscience researcher at Meta’s Paris lab. NOTE: StarTalk+ Patrons can listen to this ent ... Show More
57m 4s
Oct 7
Things You Thought You Knew – Quantum Cat
What happens when you fall into a black hole? Neil deGrasse Tyson and Chuck Nice give us the step-by-step on spaghettification, explain Schrodinger's cat, and explore quantum tunnelling… Or do they? NOTE: StarTalk+ Patrons can listen to this entire episode commercial-free here: h ... Show More
46m 35s
Sep 5
Cosmic Queries – Grabby Aliens with Charles Liu
What would happen if the speed of light were infinite? Neil deGrasse Tyson, joined by co-hosts Chuck Nice, Gary O’Reilly, and astrophysicist Charles Liu, answers questions about quantum entanglement, qubits, higher dimensions, grabby aliens, and more!NOTE: StarTalk+ Patrons can l ... Show More
50m 47s
Apr 2025
Explosive Science with Kate the Chemist
What are chemical reactions like in space? Neil deGrasse Tyson and Chuck Nice team up with Kate the Chemist to explore how cesium helps us tell time, the elusive quest for the periodic table’s “island of stability,” how AI is revolutionizing chemistry, and more!NOTE: StarTalk+ Pa ... Show More
54m 29s
Apr 2025
Changing the World (Literally)
Could we create an atmospheric sun shield to halt the effects of global warming? Should we? Neil deGrasse Tyson, Chuck Nice, and Gary O’Reilly are joined by climate scientist Daniele Visioni and sociologist Holly Jean Buck to explore the science and ethics of deliberately alterin ... Show More
58m 27s
Sep 30
The New Space Race with Jeff Thornburg
What will the future of space look like? Neil deGrasse Tyson and comic co-host Chuck Nice explore the engineering challenges and scientific questions shaping the next era of aerospace with aerospace engineer Jeff Thornburg.NOTE: StarTalk+ Patrons can listen to this entire episode ... Show More
1h 7m
Feb 2025
The “Bang” in Big Bang with Charles Liu
Could slowing time increase mass? Do particles ever collide or do they just get really really close? Did anything go “bang” during the Big Bang? Neil deGrasse Tyson, co-host Paul Mecurio, and astrophysicist Charles Liu tackle these cosmic questions and more!NOTE: StarTalk+ Patron ... Show More
49m 48s
Apr 2025
Einstein’s Crumbs with Janna Levin
How did Einstein’s work influence the world we know today? Neil deGrasse Tyson and Harrison Greenbaum team up with astrophysicist Janna Levin, PhD, to explore Einstein’s physics and its resulting discoveries, from Walmart laser pointers to black holes and wormholes. NOTE: StarTal ... Show More
52m 17s
Sep 9
Cosmic Queries - Black Hole Universe
Are we closer in size to an atom or the universe? Neil deGrasse Tyson and Paul Mecurio answer grab-bag questions about Hawking Radiation, power on the moon, and whether our universe is inside a black hole.NOTE: StarTalk+ Patrons can listen to this entire episode commercial-free h ... Show More
43m 32s
Sep 16
Gravity’s Cosmic Symphony with Kelly Holley-Bockelmann
Could LISA detect primordial black holes or gravitational waves from the Big Bang? Neil deGrasse Tyson and co-host Chuck Nice explore LISA and the future of gravitational wave astronomy with astrophysicist Kelly Holley-Bockelmann.NOTE: StarTalk+ Patrons can listen to this entire ... Show More
53m 42s