In this episode of Beyond Longevity, Daphna speaks with Dr David Cox, a health journalist (BBC, The Guardian, The Telegraph, NBC News and others), who holds a PhD in neuroscience from the University of Cambridge and is the author of The Age Code, about how diet, ultra-processed foods and the modern food environment shape biological ageing.

Dr David argues that the longevity conversation often focuses too heavily on future drug breakthroughs, supplements and biohacking, while overlooking lower-hanging fruit that could already have a meaningful impact on long-term health. He explains why reducing ultra-processed foods, increasing fibre intake and paying closer attention to micronutrients such as vitamin K may matter far more than many people realise.

The conversation explores gut ageing and its relationship with immune ageing, possible drivers behind the rise in early-onset cancers, and practical lifestyle strategies that may support healthier ageing. These include slow cooking, eating more protein and calories earlier in the day, lowering dietary acid load through fruits, vegetables and herbs, and the role omega-3s may play in long-term health.

Daphna and Dr David also discuss biological ageing tests, visceral fat, kidney health markers, the limitations of CGMs for the average person, exercise mimetics, affordability within longevity medicine, and whether governments should take a far more active role in tackling the everyday drivers of chronic disease and accelerated ageing.

The Age Code: https://www.amazon.co.uk/dp/0008708878

https://www.instagram.com/drdavidcoxhealth

https://www.linkedin.com/in/dr-david-cox-6b219666

00:00 Welcome and Guest Intro

02:00 From PhD to Journalism

03:17 Science Scepticism and Nuance

05:22 Trust Crisis in Health

06:44 Protein Hype vs Fibre

07:40 Micronutrients Matter

09:07 Inside The Age Code

10:50 Early Onset Cancer Clues

12:38 Gut Ageing Explained

14:49 Ten Nutritional Stressors

17:55 Ultra Processed Food Reality

19:32 Personal Choice vs Policy

23:33 Longevity Focus Misplaced

25:00 Ageing Tests and Omega 3

27:39 Advice for Any Budget

29:48 Sauna Protocols

31:04 Metabolomics Health Snapshots

33:16 Testing Anxiety and Rule of Three

35:41 His Own Biomarker Wake Up

37:41 Best and Overrated Biomarkers

41:25 Exercise Mimetic Drugs Debate

48:05 Government and Ageing Strategy

50:23 Kitchen Takeaways and Seaweed

53:18 Rapid Fire Round

56:08 Final Reflections and Outro

Supplements promise a lot: mitochondrial support, better brain health, healthier gut function, anti-ageing benefits and more.

But how much of that is real science, and how much is simply clever wording on a label?

In this episode of Beyond Longevity, Dr Luke Bucci, PhD, Chief Scientific Officer at Juvenon, brings both a scientist’s eye and decades of experience in the supplement industry to one of the most confusing areas of longevity.

Dr Luke explains the difference between a product being described as “science-backed” and one that is supported by meaningful human clinical evidence. He also discusses why the dose, form and standardisation of an ingredient matter, and why “fairy-dusting” fashionable ingredients into a formula can make a product sound far more proven than it really is.

We talk about bioavailability, absorption, the gut microbiome, and why feeling stimulated is not the same as supporting mitochondrial health. Dr Luke also explains why creatine has moved beyond the gym, why blood flow and nitric oxide matter as we age, and how nutrients such as magnesium, vitamin D3, omega-3s, polyphenols and CoQ10 fit into a more thoughtful approach to supplementation.

This is a practical and refreshingly honest conversation about how to read beyond the label, ask better questions, and think more clearly about what supplements can, and cannot, do.

Links:

Instagram: https://www.instagram.com/juvenonwellness

Facebook: https://www.facebook.com/Juvenon/

Website: https://juvenon.com/

00:00 Welcome and Guest Intro

01:53 Dr Bucci Origin Story

03:26 Science vs Marketing Today

04:44 Science Backed vs Clinical

09:14 Fairy Dusting Exposed

11:05 Bioavailability Reality Check

14:15 Standardisation and Sourcing

22:03 Gut Microbiome Benefits

24:30 Testing and Trial Periods

27:33 Longevity Trend Explained

30:35 Mitochondria 101

34:14 Stimulants vs Real Energy

40:47 Stimulant Band Aid Trap

41:51 Creatine Beyond The Gym

45:08 Creatine Dosing And Safety

47:11 Creatine For Brain Ageing

50:53 Why Blood Flow Declines

53:42 Nitric Oxide Basics

57:44 Arginine Silicate Explained

01:04:45 Polyphenols And Nitrates

01:06:53 My Essential Supplements

01:11:36 Rapid Fire Wisdom

01:13:49 Episode Takeaways

This week on Beyond Longevity, I am joined by Dr Herna de Wit, CEO and Founder of Omnisci Consulting, with a PhD in Biochemistry and an LLB in Law.

Dr Herna brings a very unusual and valuable combination to the longevity conversation: deep scientific training, legal expertise and hands-on experience advising companies in the health, biotech and longevity space.

Longevity is full of exciting science, but it is also a field where marketing can move faster than evidence. In this episode, we ask a simple but important question: how do we separate what is genuinely credible from what merely sounds convincing?

Dr Herna shares her five-point “scientific sanity check” for evaluating longevity products, supplements and protocols. We discuss why human RCT data matters more than animal or cell studies, why dosage and bioavailability are often overlooked, what biological age clocks can and cannot tell us, and why safety, third-party testing, and regulatory discipline are essential in a fast-moving market.

We also look at longevity from the perspective of investors and company builders. What are the red flags? What makes a claim scientifically weak? And why does defensible intellectual property matter far beyond simply having a patent?

Dr Herna explains how companies can think more intelligently about protectability, including through delivery systems, synergistic formulations, data, know-how and clearer scientific positioning.

The conversation then turns to South Africa, a market that many listeners may not immediately associate with longevity, but one that raises fascinating questions. We discuss medical tourism, scientific talent, regulatory realities, affordability and whether South Africa could carve out a distinctive role in the global healthspan conversation.

Finally, we speak about one of the most important tensions in longevity: if the science advances, who actually gets access? Is longevity already becoming another layer of privilege, or can the field develop in a way that is more credible, more inclusive and more useful?

This is a conversation about evidence, accountability and the future of a field that urgently needs both excitement and discipline.

Links:

https://www.linkedin.com/in/herna-de-wit-phd-llb/

https://linktr.ee/drherna.omnisci

00:00 Show Intro and Guest

02:41 Dr Herna’s Unusual Path

04:29 What She Does Today

06:13 Five Point Science Audit

11:17 Investor Red Flags

15:31 IP Beyond Patents

20:12 Open Science vs Profit

24:35 Founder IP Strategy

32:54 Global Longevity Hotspots

33:42 South Africa Opportunity

36:33 Access and Inequality

43:12 Regulation and Innovation

46:20 How to Work With Dr Herna

50:02 Rapid Fire Questions

52:20 Final Takeaways Outro