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/0008708878https://www.instagram.com/drdavidcoxhealthhttps://www.linkedin.com/in/dr-david-cox-6b21966600:00 Welcome and Guest Intro02:00 From PhD to Journalism03:17 Science Scepticism and Nuance05:22 Trust Crisis in Health06:44 Protein Hype vs Fibre07:40 Micronutrients Matter09:07 Inside The Age Code10:50 Early Onset Cancer Clues12:38 Gut Ageing Explained14:49 Ten Nutritional Stressors17:55 Ultra Processed Food Reality19:32 Personal Choice vs Policy23:33 Longevity Focus Misplaced25:00 Ageing Tests and Omega 327:39 Advice for Any Budget29:48 Sauna Protocols31:04 Metabolomics Health Snapshots33:16 Testing Anxiety and Rule of Three35:41 His Own Biomarker Wake Up37:41 Best and Overrated Biomarkers41:25 Exercise Mimetic Drugs Debate48:05 Government and Ageing Strategy50:23 Kitchen Takeaways and Seaweed53:18 Rapid Fire Round56:08 Final Reflections and Outro