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Tim Gray speaks with Liz Earle, wellness pioneer, author, and broadcaster, about mitochondrial health, body identical hormones, the truth about ageing, light, water, grounding, EMF, and what 40 years in the wellness space has taught her about what actually works.
They explore why mitochondria run the show at a cellular level, why the separation of oral and medical care has cost women decades of unnecessary suffering, and why the three inputs your mitochondria need most have been free all along.
In this episode, we explore:
➡︎ Why mitochondria are the master key to ageing Liz explains why everything from energy production to DNA repair, hormone signalling and immune function runs through the mitochondria, and why looking after them is the most foundational thing you can do for longevity.
➡︎ The difference between body identical and synthetic hormones Liz breaks down why bioidentical or body identical hormones fit the cell receptor like a key in a lock, why synthetic hormones do not, and why virtually all modern HRT is now body identical and available on the NHS.
➡︎ Why perimenopause starts much earlier than most women think Tim and Liz discuss how perimenopause can begin in the late 30s, why symptoms are so easily misattributed to life stress, and why blood tests alone are an unreliable way to diagnose it.
➡︎ The three ancestral inputs mitochondria actually need Liz shares how light, living water, and grounded connection to the earth were the original mitochondrial inputs for human health, and why disconnecting from all three is quietly driving modern disease.
➡︎ Why the electric light bulb was one of the most destructive things to happen to human health Tim and Liz discuss how artificial light at night disrupted circadian rhythm, hormonal signalling, and cellular repair in ways we are only now beginning to understand.
➡︎ What 40 years in the wellness space changed her mind about Liz reflects on moving from pro-supplement to anti-supplement and back again, and why food-sourced, highly researched, mitochondria-specific supplements are now her focus.
Liz Earle is a bestselling author, broadcaster, and one of the most trusted voices in UK wellness. With over 40 years of research and writing across nutrition, hormones, longevity, and skincare, she has consistently been ahead of the curve on topics from gut health and bioidentical hormones to mitochondrial health and ancestral living. Her latest book, How to Age, brings together the science of thriving in your second half.
Highlights:
00:00 Intro
01:26 The Longevity Gold Rush and 40 Years in Wellness
03:16 Why Ancestral Health Practices Are Finally Being Proven by Science
03:50 The Low Fat Lie and the Fight Against a Margarine Giant
08:24 Vested Interests: Who Funds the Research and Why It Matters
13:55 Healthspan vs Lifespan, Why 12 Years of Poor Health Shouldn’t Be Normal
18:30 Bioidentical vs Synthetic Hormones Explained
23:10 Male Testosterone Decline, Tim’s Story
28:31 Why Perimenopause Can Start in Your Late 30s
29:25 The Estrogen Symptoms No One Warns You About (Tinnitus, Brain Fog and More)
35:50 Mercury Fillings, Fluoride and the Fight Against Biological Dentistry
42:10 Why Mitochondria Run the Entire Show
46:28 The Three Ancestral Inputs: Light, Water and Grounding
51:18 Why the Electric Light Bulb Was Catastrophic for Human Health
58:25 What 40 Years in Wellness Changed Her Mind About
1:02:43 Rapid Fire
Connect with Liz Earle here:
Resources Mentioned:
2. Professor Glen Jeffery (UCL) — mitochondria, light, and stroke recovery
3. Professor Richard Weller (University of Edinburgh) — UVA, nitric oxide, and blood pressure
Books:
A huge thank you to Zenos for sponsoring this episode.
I have been using CellZen by Zenos as part of my cellular longevity stack because energy is not just about sleep, stress, or how busy your schedule is. It starts in your cells, especially the mitochondria that produce the energy your body runs on. As we age, mitochondrial function can slow down and cellular waste can build up, which is why CellZen brings together six of the compounds longevity research keeps coming back to: Urolithin A, NAC, Spermidine, Fisetin, MitoPrime® and Ergothioneine. It is designed to support mitochondrial function, cellular repair, antioxidant protection, and healthy ageing in one formula instead of taking multiple separate supplements. Head to zenoshealth.com and use code TIMBIOHACKER for 10% off.
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This is the Health Optimisation Podcast with your host, Tim Gray, the UK’s Leading Biohacker. This podcast brings you the latest in health optimisation, featuring experts and breakthroughs in nature, biohacking, technology, and longevity research. Join us to discover actionable advice for living longer and healthier.
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