Ground Truths

Eric Topol

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In their own words

Facts, data, and analytics about biomedical matters. erictopol.substack.com

As heard by us

Based on 6 episodes we listened to · September 2026

Ground Truths makes emerging medical research legible by pressing accomplished guests on mechanisms, evidence limits, and practical consequences.

Eric Topol builds Ground Truths around sustained conversations with researchers and medical thinkers, moving from vagus nerve stimulation and brain clearance to sleep, longevity, and AI in healthcare.

Read our full review in PlayNext →

Why you'd press play

A vagus-nerve gadget sounds different once Eric Topol gets you asking how deep the nerve sits.

Press play if you want

  • to make a handheld nerve-stimulation device earn your trust with more than skin contact
  • to hear why more drug-induced sleep may not mean better brain waste clearance
Read the full recommendation in PlayNext →

Talks about

Best episodes of Ground Truths

Short reviews from the PlayNext desk, based on the episodes we processed.

Vagus Nerve Stimulation and the Immune System

A careful look at vagus nerve science, autoimmune hope, and where promise still outruns proof.

Ground Truths draws a clean line from Tracy's early TNF work to the point where the brain and immune system sit inside a serious medical field.

Matthew Walker: Promoting Our Sleep Health

A careful reset on sleep science, drug physiology, and the limits of current human evidence.

Matt Walker and Eric Topol keep this one sober and useful. They revisit what has changed since Why We Sleep, then stay with the hard parts: the glymphatic system, the limits of common sleep drugs, and why natural sleep still has not been fully copied in a pill.

How Our Brain Drains Its Waste Products

A mechanism-first look at how sleep may help the brain clear waste.

Ground Truths spends most of its time on a simple question: how does the brain clear out what it does not need, and what does sleep have to do with it? The conversation with Dr.

Robert Wachter & Eric Topol - Discuss a Giant Leap Book

A clear look at AI in medicine, where scaling expertise and copying trust sit uncomfortably close together.

The episode follows Robert Wachter and Eric Topol as they move from AI's promise to its messier medical uses. Mayo Clinic's effort to build digital twins of trusted physicians gives the discussion its clearest anchor, with Dr. Marple cast as a patient-facing avatar.

Katie Couric and Eric Topol: On the State of US Life Science and Extending Healthspan

A measured longevity conversation that keeps asking what is proven, what may come next, and what still needs proof.

Couric and Topol keep the conversation grounded and easy to follow, moving from longevity and evidence-based medicine into the pressure points around anti-science politics, GLP-1 drugs, inflammation, brain health, and AI-based risk prediction.

A Look Into the Blue Zones

A longevity conversation that treats sidewalks and street design as public health tools.

Ground Truths treats longevity as a systems problem, not a slogan. It follows Blue Zones from a search for places where people live longest into the Danish twin study, which put genes at roughly 20 to 25 percent of lifespan variance.

Podcasts like Ground Truths

Episodes

  1. 1

    Christopher Labos: Debunking Myths About What We Eat and Drink

    Eric Topol introduces cardiologist Chris Labos, who discusses his book debunking dietary myths and shares a humorous anecdote about emceeing a research awards ceremony.

    ·45m
  2. 2

    Mike Osterholm & Eric Topol - Discuss “The Big One” book

    ·36m
  3. 3

    Bruce Lanphear: Chronic Lead Exposure, a Risk Factor for Heart Disease

    ·26m
  4. 4

    Owen Tripp: Why Can't I Find and Get to the Right Doctor?

    Owen Tripp shares a personal story from 2016 about misdiagnosed hearing loss and facial numbness, highlighting challenges in finding the right doctor and accessing accurate healthcare.

    ·32m
  5. 5

    Bob Bordone and Joel Salinas: How to Deal With Conflict

    The hosts introduce authors Bob Bordone and Joel Salinas to discuss their book on conflict resilience, exploring how their law and medicine backgrounds led to interdisciplinary collaboration during polarized times.

    ·29m
  6. 6

    Joseph Allen: The Pivotal Importance of Air Quality, Ventilation and Exposures (Such as "Forever Chemicals") For Our Health

    Eric Topol introduces Joseph Allen, discussing his background as a former private investigator and FBI applicant before transitioning to public health, focusing on air quality and exposures.

    ·1h 2m
  7. 7

    Tyler Cowen: The Prototypic Polymath

    Eric Topol introduces Tyler Cowen as a renowned polymath, discussing his extensive work including books, blogs, podcasts, and his recent writing for The Free Press, while touching on AI tools for learning.

    ·32m
  8. 8

    Ardem Patapoutian: The Pervasive PIEZO Channels

    Ardem Patapoutian, a 2021 Nobel Laureate, discusses his challenging childhood in Lebanon during the civil war, including a kidnapping incident.

    ·40m
  9. 9

    A Master Class on Sleep

    This segment discusses the bidirectional relationship between sleep disturbances and Alzheimer's disease, including how sleep issues may accelerate the buildup of proteins like amyloid and tau in early stages.

    ·57m
  10. 10

    Carl Zimmer: Air-Borne and the Big Miss With Covid

    Eric Topol interviews Carl Zimmer about his new book 'Airborne', discussing its inspiration from the COVID-19 pandemic and the challenges in understanding how the disease spreads.

    ·54m
  11. 11

    Charlie Swanton: A Master Class on Cancer

    Eric Topol introduces Charlie Swanton, a leading oncology researcher, and begins discussing his early career and PhD work in molecular biology.

    ·56m
  12. 12

    Adam Kucharski: The Uncertain Science of Certainty

    Adam Kucharski discusses his book 'Proof', exploring gaps in understanding truth, motivated by his work in health outbreaks and the contrast between mathematical certainty and real-world scientific uncertainty.

    ·45m
  13. 13

    On the Future of Species

    This episode segment introduces a discussion on artificial biology and biological intelligence, exploring the convergence of AI and biology through the book 'On the Future of Species' by a molecular biologist and co-founder of Genero.

    ·45m
  14. 14

    Dr. Susan Monarez—Former CDC Director, First Live Interview

    This segment introduces Dr.

    ·55m
  15. 15

    Eric Topol With Devi Sridhar on her new book- How Not to Die (Too Soon)

    Eric Topol interviews Devi Sridhar about her new book 'How Not to Die Too Soon', discussing global health issues, the gap between health knowledge and outcomes, and the impact of the pandemic on life expectancy.

    ·38m
  16. 16

    Anna Greka: Molecular Sleuthing for Rare Diseases

    Eric Topol introduces Anna Greka, a multidisciplinary scientist, and sets up a discussion about her work on rare diseases, particularly focusing on her TED Talk and the MUC 1 discovery.

    ·49m
  17. 17

    Lotte Bjerre Knudsen: The Scientist Who Drove GLP-1 Drugs For Obesity and Alzheimer's

    This segment introduces Lotte Bjerre Knudsen, a key scientist at Novo Nordisk recognized for her work on GLP-1 drugs for obesity and Alzheimer's, discussing her background and the early development of these treatments.

    ·47m
  18. 18

    Mark Cuban: A Master Disrupter for American Healthcare

    Mark Cuban discusses his efforts to disrupt healthcare by offering low-cost medications through cost plus drugs and critiques the PBM industry for exploiting companies with rebates.

    ·38m
  19. 19

    AI Snake Oil—A New Book by 2 Princeton University Computer Scientists

    Eric Topol interviews Saesh Kapoor, co-author of the book 'AI Snake Oil', discussing his background as a Princeton PhD candidate and former Facebook machine learning engineer, and the motivation behind writing a book about the realistic capabilities and limitations of AI.

    ·39m
  20. 20

    Francis Collins: On Truth, Science, Faith and Trust

    Eric Topol introduces Francis Collins and his new book 'The Road to Wisdom on Truth, Science, Faith, and Trust', discussing its focus on moving beyond hyper-partisan politics to essential sources of wisdom.

    ·40m
  21. 21

    Seth Berkley & Eric Topol - Discuss Fair Doses Book

    Seth Berkley discusses his book 'Fair Doses' and the early days of the COVID-19 pandemic, starting from Davos in January 2020.

    ·47m
  22. 22

    Kevin Hall: What Should We Eat?

    ·48m
  23. 23

    Peter Hotez & Eric Topol - Discuss “Science Under Siege” book

    Eric Topol introduces Dr.

    ·53m
  24. 24

    The Glaucomfleckens: The Best in Medical Comedy

    Eric Doppel introduces and interviews the Glaucomfleckens, a medical comedy duo, discussing their background and rise in popularity through social media and comedy.

    ·35m
  25. 25

    Steve Quake and Charlotte Bunne: The Holy Grail of Biology

    This segment discusses a groundbreaking paper on building a virtual cell using AI, featuring authors Charlotte Bunne and Steve Quake, and explores the convergence of AI and biology as the holy grail of the field.

    ·44m
  26. 26

    Jennifer Gunter & Eric Topol: Discuss Women’s Health and Recent Changes by FDA for MHT

    Dr.

    ·1h 1m
  27. 27

    Charlotte Blease: Is A.I. Going to Remedy Medicine’s Problems?

    The segment discusses whether AI can address problems in medicine, using Jen Lawson's case with Ehlers-Danlos syndrome to highlight financial barriers and healthcare access issues.

    ·31m
  28. 28

    Sir John Bell: Transforming Life Science and Medicine's Future

    Eric Topol interviews Sir John Bell about his career and new role at the Ellison Institute of Technology, focusing on his contributions to life sciences and medicine.

    ·33m
  29. 29

    Pradeep Natarajan: Preventing Heart Disease

    Pradeep Natarajan discusses two new siRNA drugs targeting APOC3 and ANGPTL3 for cardiovascular prevention, based on genetic insights and clinical trials.

    ·58m
  30. 30

    Faisal Mahmood: A.I.'s Transformation of Pathology

    Eric Topol interviews Professor Faisal Mahmood about the application of AI and deep learning in pathology, highlighting his background and early advancements in the field.

    ·41m
  31. 31

    Euan Ashley: Exercise may be the single most potent medical intervention ever known

    This segment introduces a discussion with Euan Ashley about the groundbreaking MOTORPACK study, which investigates exercise as a powerful medical intervention through molecular analysis.

    ·48m
  32. 32

    Steve Horvath: Our Epigenetic Age Clocks

    Eric Topol interviews Steve Horvath about the accidental discovery of the Horvath epigenetic clock, which uses DNA methylation markers to measure aging across tissues.

    ·41m
  33. 33

    The Story of Francis Crick, a new masterpiece biography by Matthew Cobb

    This segment discusses the complex personality of Francis Crick as revealed in Matthew Cobb's biography, highlighting his contradictory traits such as being a bohemian philanderer with an open marriage while also engaging in intellectual pursuits and controversial views.

    ·59m
  34. 34

    Katelyn Jetelina: Public health in the US

    The discussion focuses on the withdrawal of the CDC nominee Weldon, his anti-vaccine stance, and comparisons to RFK Jr.'s controversial views during a measles outbreak.

    ·27m
  35. 35

    Rachael Bedard: A Geriatric Physician and Champion for Patients Without a Voice

    Dr.

    ·43m
  36. 36

    Tom Frieden & Eric Topol - Discuss the Formula for Better Health Book

    Eric Topol interviews Dr.

    ·35m
  37. 37

    Shana Kelley: Biosensors to Track Proteins and Inflammation in Our Blood in Real Time

    Shana Kelley discusses her development of advanced biosensors that enable real-time, continuous monitoring of proteins and inflammation in the blood, building on existing glucose sensor technology.

    ·31m
  38. 38

    Emily Silverman: Storytelling, Uncertainty, and Humanity in Medicine

    Eric Topol introduces Dr.

    ·47m
  39. 39

    Priscilla Chan & Jennifer Doudna: New Center for Pediatric CRISPR Cures

    Eric Topol introduces Drs.

    ·23m
  40. 40

    Sanjay Gupta & Eric Topol - Discuss “It Doesn’t Have to Hurt” book

    Sanjay Gupta discusses his wife's struggle with chronic pain from an autoimmune disease and how a restrictive anti-inflammatory diet, alongside medications like Humira, helped her manage the condition.

    ·22m
  41. 41

    Patrick Hsu: A Trailblazer in Digital Biology

    Patrick Hsu discusses the founding and mission of the ARC Institute, which focuses on biomedical science and machine learning to address complex human diseases.

    ·47m
  42. 42

    Tom Cech: RNA Takes Center Stage

    Tom Cech discusses his transition from studying DNA to RNA, highlighting RNA's underestimated importance and its exciting discoveries.

    ·49m
  43. 43

    Katerina Akassoglou: Blood Clots, Brain Inflammation, and Covid

    Eric Topol introduces Katerina Akassoglou, a neuroimmunologist discussing her research on blood-brain barrier integrity, fibrinogen, and inflammation, with connections to COVID-19 and neurodegenerative diseases.

    ·36m
  44. 44

    Shane Crotty: A Landmark Study on Upper Airway Mucosal Immunity

    Eric Topol introduces Shane Crotty to discuss a landmark study on upper airway mucosal immunity, particularly relevant to COVID, published in Nature.

    ·38m
  45. 45

    A Look Into the Blue Zones

    Dan Buettner discusses the 20-year anniversary of his Blue Zones project, explaining how he identified longevity hotspots like Sardinia and Okinawa, the Power Nine lifestyle principles, and addressing recent criticisms of the data.

    ·56m·5 clips
  46. 46

    Matthew Walker: Promoting Our Sleep Health

    Hidden gem

    Sleep scientist Matthew Walker joins Eric Topol to discuss the latest breakthroughs in sleep research, including how sleep deprivation affects social behavior and cooperation, the brain's glymphatic cleansing system, genetic short sleepers, and the surprising effects of different sleep medications on brain health.

    ·38m·3 clips
  47. 47

    How Our Brain Drains Its Waste Products

    Hidden gem

    Neuroscientist Dr.

    ·56m·5 clips
  48. 48

    Vagus Nerve Stimulation and the Immune System

    Hidden gem

    Dr.

    ·1h 4m·6 clips
  49. 49

    Robert Wachter & Eric Topol - Discuss a Giant Leap Book

    Hidden gem

    Eric Topol interviews Robert Wachter about his new book on AI in medicine, covering real-world case studies, the risks of hallucinations, the promise of AI scribes, and why we should judge AI against our imperfect healthcare system rather than an ideal of perfection.

    ·46m·4 clips
  50. 50

    Katie Couric and Eric Topol: On the State of US Life Science and Extending Healthspan

    Hidden gem

    Katie Couric interviews Dr.

    ·55m·5 clips
  51. 51

    Trisha Pasricha: How to Get to Poophoria, Making Your Bowel Movements a Joy!

    Apr 10, 2026·57m
  52. 52

    Venki Ramakrishnan: The New Science of Aging

    May 28, 2024·50m
  53. 53

    Svetlana Blitshteyn: On the Front Line With Long Covid and POTS

    May 20, 2024·53m
  54. 54

    Kate Crawford: A Leading Scholar and Conscience for A.I.

    May 12, 2024·51m
  55. 55

    Akiko Iwasaki: The Immunology of Covid and the Future

    May 4, 2024·42m
  56. 56

    Aviv Regev: The Revolution in Digital Biology

    Apr 28, 2024·36m
  57. 57

    Jennifer Doudna: The Exciting Future of Genome Editing

    Apr 14, 2024·31m
  58. 58

    Daniel Drucker: Illuminating the GLP-1 Drug's Break Out

    Apr 6, 2024·37m
  59. 59

    Sid Mukherjee: On A.I., Longevity and Being A Digital Human

    Mar 29, 2024·47m
  60. 60

    Holden Thorp: Straight Talk from the Editor-in-Chief of the Science family of journals

    Mar 17, 2024·1h 1m
  61. 61

    Daphne Koller: The Convergence of A.I. and Digital Biology

    Mar 10, 2024·35m
  62. 62

    Coleen Murphy: The Science of Aging and Longevity

    Mar 3, 2024·45m
  63. 63

    Michelle Monje: The Brain in Long Covid and Cancer

    Feb 25, 2024·44m
  64. 64

    Jim Collins: Discovery of the First New Structural Class of Antibiotics in Decades, Using A.I.

    Feb 13, 2024·29m
  65. 65

    Katalin Karikó: The unimaginable, obstacle-laden, multi-decade journey to discover the mRNA platform and win the 2023 Nobel Prize

    Feb 2, 2024·54m
  66. 66

    Jonathan Howard, author of We Want Them Infected

    Jan 25, 2024·43m
  67. 67

    An exhilarating conversation with Azeem Azhar on medical A.I., science of aging, genome editing and the GLP-1 drugs

    Jan 18, 2024·1h 18m
  68. 68

    Liv Boeree: On Competition, Moloch Traps, and the A.I. Arms Race

    Jan 13, 2024·36m
  69. 69

    Tony Wyss-Coray: The Science of Aging

    Dec 26, 2023·32m
  70. 70

    David Liu: A Master Class on the Future of Genome Editing

    Dec 10, 2023·48m
  71. 71

    Geoffrey Hinton: Large Language Models in Medicine. They Understand and Have Empathy

    Dec 8, 2023·37m
  72. 72

    Andrew Ng: On OpenAI's stormy times, AI regulation, education, and where we are headed for healthcare and beyond

    Nov 21, 2023·32m
  73. 73

    The Science Behind Food and Dangers of Ultra-Processed, Artificial, Non-Food with Dr. Chris Van Tulleken

    Oct 24, 2023·47m
  74. 74

    Peter Attia: Our conversation about his hit book OUTLIVE, Medicine 3.0, promoting healthspan, GLP-1 drugs and more

    Oct 19, 2023·43m
  75. 75

    On Genome Editing With Fyodor Urnov, A Pioneer

    Oct 12, 2023·47m
  76. 76

    Straight Talk with Peter Hotez

    Sep 19, 2023·48m
  77. 77

    Ziyad Al-Aly: Illuminating Long Covid

    Sep 11, 2023·41m
  78. 78

    Straight talk with Magdalena Skipper, the Editor-in-Chief at Nature

    Aug 19, 2023·46m
  79. 79

    John Halamka: How Mayo Clinic is Transforming Healthcare with A.I.

    Aug 11, 2023·34m
  80. 80

    Melanie Mitchell: Straight Talk on A.I. Large Language Models

    Aug 4, 2023·39m
  81. 81

    Al Gore: The Intersection of A.I. and Climate Change

    Jun 21, 2023·34m
  82. 82

    Hannah Davis: A 360° on Long Covid

    Jun 6, 2023·42m
  83. 83

    Peter Lee and the Impact of GPT-4 + Large Language AI Models in Medicine

    May 22, 2023·43m
  84. 84

    Straight talk with Michael Osterholm

    May 5, 2023·35m