Glycine Supplementation: Researched Benefits & Limits - Claims Often go Further than the Evidence.

Glycine is one of the simplest amino acids - and one that the human body already produces and uses extensively. Yet it’s increasingly promoted as a supplement for sleep, ageing, and metabolic health. In this episode, we take a research-driven look at glycine, focusing on its physiological roles, dietary sources, and where supplementation claims exceed the evidence. Topics covered include: • What glycine is and why it matters biologically • Glycine’s role in collagen, neurotransmission, and metabolism • Endogenous production vs dietary intake • Glycine and sleep-related claims • Food sources vs supplementation • Common glycine myths and oversimplifications This is not supplement promotion or longevity marketing — it’s a careful breakdown of a basic biological molecule and its realistic relevance to long-term health. If you’re interested in longevity, metabolic health, or evidence-based supplementation, this episode offers a clearer framework for thinking about glycine. Chapters included for easy navigation: 0:00 – 4:00 | Introduction: The Simplest Amino Acid • Overview of Glycine: • Endogenous Production: • Executive Summary of Benefits: 4:00 – 9:00 | Deep Sleep and Circadian Regulation • Efficacy and Dosing: • The Cooling Mechanism: • Daytime Outcomes: 9:00 – 14:00 | Metabolic Health and Glycemic Control • Type 2 Diabetes and Metabolic Syndrome: • Biological Action: • Cardiovascular Links: 14:00 – 19:00 | High-Dose Glycine in Psychiatry • Schizophrenia as Adjunctive Therapy: • Mechanism of NMDA Modulation: • The Clozapine Caveat: 19:00 – 25:00 | Geroscience and the GlyNAC Protocol • Addressing Ageing Hallmarks: • The "Power of 3": • Physical Function in Older Adults: 25:00 – 30:00 | Muscle, Liver, and Specialised Applications • Renal and Muscle Health: • Hepatoprotection: • Collagen Synthesis: 30:00 – 35:00 | Safety, Practical Takeaways, and Research Gaps • Safety Profile: • Bioavailability: • Critical Gaps (The "No Hallucination" Zone): • Final Conclusion: Based on peer-reviewed research Subscribe for research-first discussions on whole foods, supplements, and dietary approaches This content is for educational purposes only and does not replace professional medical advice.