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LEVITY

Peter Ottsjö
LEVITY
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  • #34 Biomarkers of aging: How close are we, really? - A conversation with Sara Hägg
    Sara Hägg, PhD is an associate professor at Karolinska Institutet, where she leads the Molecular Epidemiology of Aging Group. Her work focuses on human biomarkers of aging - especially biological age “clocks” built from epigenetic, proteomic, and metabolomic data - and on turning Nordic registry resources into clinically useful aging measures.In this episode:* What biological/epigenetic age clocks actually measure (and what they don’t)* Accuracy, error bars, and why clocks aren’t clinic-ready yet* Epigenetic vs. proteomic vs. metabolomic clocks - strengths and trade-offs* Organ-specific clocks (liver, ovary, kidney) and what they reveal* Why uncertainty spikes at life transitions; menopause as a natural “stress test”* PC (principal-component) clocks and noise reduction* Nordic registry & Swedish Twin Registry advantages; UK Biobank use* Direct-to-consumer tests: interpreting results and common pitfalls* AI’s role in building/validating clocks and handling uncertainty* What would move the field fastest (data, standards, trials) and where Sweden standsShow notes for this episode will be available after this airs. Sign up for the LEVITY newsletter to get them straight to your inbox: reachlevity.comLEVITY is co-hosted by Patrick Linden, philosopher and author, and Peter Ottsjö, journalist and author.CHAPTERS00:00 Introduction03:27 Why Sweden lags behind in longevity science08:04 Nordic registry & Swedish twin registry advantages; UK Biobank use10:05 What is biological age?16:33 The rise of epigenetic clocks24:22 The importance of aging clocks32:04 Beyond methylation: proteomic and metabolomic clocks35:12 Organ clocks39:37 Do aging clocks generalize?54:37 The cost of aging clocks01:03:18 Uncertainty and AI01:17:10 Solving aging - where do we stand?01:28:10 Book recommendations Hosted on Acast. See acast.com/privacy for more information.
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  • #33 “Can death be the answer?" A conversation with philosopher Nicholas Agar
    We are always excited about the next technological solution. But what if it does not come? Or what if it comes only for the few, or with terrible side-effects? And while we are waiting for the easy tech fix, are we neglecting what we can do now to better our lives?Many of our previous guests have been excited about the prospect of radically extending our lives, and some have been optimistic about the prospect of achieving this in our life time, perhaps even within a few decades. We are Levity, the real longevity podcast after all.Todays guest thinks that we should be less excited about radical longevity, and radical enhancements in general. And he does not think radical life extension is on the horizon.Nicholas Agar is a New Zealand philosopher specializing in ethics. He holds a BA from the University of Auckland, an MA from Victoria University of Wellington, and a PhD from the Australian National University. As of 2022, he is a Professor of Ethics at the University of Waikato. He is a prolific writer and the author of How to think about Progress, and Truly Human Progress, to mention two recent books.CHAPTERS00:00 Introduction03:38 The hype and the reality06:02 Too much enthusiasm for radical life extension -- or too little?17:15 Distribution worries -- more life only for the rich?23:06 Pessimism about distribution and feasability29:00 Structural reasons for bad science and big promises33:30 Is it wise to spend money on radical life extension?37:13 Should we die if we have had good life?48:48 Deat as tool for solving housing crisis58:27 Liberal eugenics01:06:45 How to attract funding -- hype + conservative grant proposals01:09:40 What is enhancement?01:25:30 A mechanical Roger Federer with robot arms01:38:12 Is it bad to cease to exist? Hosted on Acast. See acast.com/privacy for more information.
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  • #32 “Medical malpractice”: Matt Kaeberlein on biological age tests
    One idea I’ve had lately is to put together a list of people to trust in geroscience and the longevity field more broadly. (And I might do it - keep an eye on reachlevity.com- and subscribe while you’re at it!)Matt Kaeberlein would not only make that list - he’d likely be right at the top. He’s rigorous, precise in his wording, and always puts integrity ahead of hype. But, and this is important, I wouldn’t characterize him as a skeptic. He’s a realist who insists on evidence, yet at the same time he’s visionary and deeply optimistic about what aging science can deliver.Matt is probably best known for his pioneering work on rapamycin and for co-founding the Dog Aging Project. In this episode, though, we also talk about Optispan - his proactive healthcare company - and Ora Biomedical, where the WormBot platform is screening thousands of interventions for effects on lifespan. We get into therapeutic plasma exchange (TPE), how artificial intelligence might accelerate discovery, and even his favorite science fiction books.And true to form, Matt doesn’t hold back. He calls out irresponsible use of biological age tests - going so far as to label it “medical malpractice” - and criticizes hype-driven actors, sloppy science communication, and the inertia of institutions like the NIH. At the same time, he shows how rigorous, honest work could move the entire field forward.-----🚀 Special offer for our LEVITY audience: Join Vitalism today and receive a 30% discount on your membership using the code LEVITY at checkout. https://www.vitalism.io/membershipShow notes for this episode will be available soon after this airs. Sign up for the LEVITY newsletter to get them straight to your inbox: reachlevity.com-----CHAPTERS00:00 Teaser01:38 Introduction to Dr. Matt Kaeberlein11:50 mTOR and rapamycin21:37 The Dog Aging Project51:08 Personal experiences with rapamycin01:05:33 The inertia of the NIH01:08:54 The right to try law and access to experimental therapies01:13:21 Ora Biomedical and The WormBot Platform01:21:41 The role of AI in longevity research01:28:29 Optispan: A new approach to proactive healthcare01:33:56 Biological age tests01:39:39 Therapeutic plasma exchange: A personal experience01:46:39 Book recommendations Hosted on Acast. See acast.com/privacy for more information.
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  • # 31 He wants to save your pet with cryo - The Kai Micah Mills interview
    When you give a child a pet, you also expose them to death—since most pets pass away long before their owners. But what if we could cryopreserve Buddy or Tiger, and bring them back from suspended animation once we have a cure for what ended their lives?Kai Micah Mills is a pioneering figure in radical life extension and biostasis. As the founder of Cryopets, he is leading efforts to make cryopreservation accessible for pets, with aspirations to extend these technologies to humans. He left high school early to pursue entrepreneurship, becoming a tech entrepreneur in his teens. A Thiel Fellow and co-founder of CryoDAO and HydraDAO, Kai is deeply involved in decentralized science initiatives aimed at advancing longevity research.00:00 Introduction04:44 Timeship in Texas05:36 Vitalism11:54 Bryan Johnson, Mormonism and Vitalism18:25 Dropping out of highschool to play video games24:25 Becoming a Thiel Fellow40:37 Why Cryonics?49:53 We want Immortality53:19 Cosmism01:01:36 AI01:05:47 Building Cryopets01:27:42 Cryonics science01:37:24 Cryo rat01:46:01 CryoDAO HydraDAO and replacement01:59:30 Talent shortage in cryogenics02:05:08 Book recommendations Hosted on Acast. See acast.com/privacy for more information.
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  • #30 Soon you'll take a drug designed by AI | Alex Zhavoronkov
    As you may have heard, AI-designed medicines have crossed a historic line. In this episode, Alex Zhavoronkov - CEO of Insilico Medicine and founder of ARDD walks us through how Insilico’s rentosertib became the first AI-generated small molecule with peer-reviewed clinical efficacy, while arguing against AI hype and reminding us that biology still moves at “the speed of traffic.” That duality runs through the whole conversation. On one side: a pragmatic operator obsessed with credible science, biomarkers, and clinical benchmarks; on the other: an AI visionary investing in cryonics, sketching “pharmaceutical superintelligence,” and thinking in decades, not quarters.We start in Basel, home to Roche and Novartis, where ARDD was born, then trace how the conference morphed into a ”high-signal filter for longevity” - packed with startups (who also fund it), hard data, and mainstream pharma.Alex looks back at his 2014 Nvidia talk (”Can Nvidia solve aging?”) and explains why Insilico trains its AI to learn age first - so it actually grasps biology. Years of problem-solving with pharma turned into their Pharma.AI toolkit (Biology42, Chemistry42, Medicine42, Science42).Insilico now runs 40+ programs and in an early Phase 2 study for idiopathic pulmonary fibrosis (IPF), their drug rentosertib showed a dose-dependent boost in lung capacity.Compared with the old path - often $150–200M and ~5 years just to pick a lead molecule - Insilico says it can often reach that point for under $3M or even less. Still, Alex is cautious: no matter how smart the AI gets, real-world testing and regulation won’t speed up overnight.Also in this episode:What made Alex cry.Why he wouldn’t give his own drug to patients - yet.How a mirror on a conference poster led to a proposal.How ARDD became the “WEF of longevity”.Why internal “kill teams” try to stop their own drug candidates.Why labeling aging a disease helps - but won’t shortcut approvals.Why he writes to “feed AI”.How Nvidia threads through the story - from free GPUs to Jensen’s video.🚀 Special offer for our LEVITY audience: Join Vitalism today and receive a 30% discount on your membership using the code LEVITY at checkout. https://www.vitalism.io/membershipShow notes for this episode will be available soon after this airs. Sign up for the LEVITY newsletter to get them straight to your inbox: reachlevity.comLEVITY is co-hosted by Patrick Linden, philosopher and author, and Peter Ottsjö, journalist and author.CHAPTERS00:00 – Teaser03:08 – Introduction to Alex Zhavoronkov06:11 – Alex talks ARDD15:15 – Big-pharma starting to embrace ARDD17:31 – The proposal story24:52 – Why Alex decided to fight aging27:44 – Neuralink, humanoids and the brain-aging bottleneck30:52 – Keeping ARDD pharma-credible32:02 – The path to Insilico48:03 – The Zhavoronkov crystal ball57:29 – The Insilico platform1:07:16 – The rentosertib story1:16:42 – What made Alex cry1:17:44 – Aging-as-disease: rhetoric vs. regulation (GLP-1 analogy)1:26:53 – Culture check: Middle East momentum, China’s stance1:34:28 – Costs & timelines: what AI compresses - and what it can’t1:41:30 – Insilico’s fully automated lab1:47:21 – “I respect Demis, but…”1:51:10 – Why even superintelligence won’t skip clinical validation1:52:15 – Cryonics as plan B: organ preservation, TimeShift, use-cases2:00:56 – Writing Forever AI & the roadmap to “pharma superintelligence”2:06:42 – Book recommendations Hosted on Acast. See acast.com/privacy for more information.
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About LEVITY

LEVITY is a podcast offering high-quality, science-informed editorial content focused on aging science and radical life extension. This includes discussions on lifestyle, biotechnology, ethical considerations of life extension, healthcare innovations, research breakthroughs and the role artificial intelligence might play. Our mission is to explore and communicate the scientific and societal pathways toward solving aging. Hosted on Acast. See acast.com/privacy for more information.
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