Why Mystery Illnesses Aren't Really Mysteries with Dr. Olivia Lesslar l A Psychoneuroimmunology Approach to Decoding Chronic Pain, Chronic Fatigue, Autoimmunity, and Complex Health Conditions

Why do so many people suffer from chronic symptoms despite being told their labs are "normal"? In this fascinating episode, we sit down with Dr. Olivia Lesslar, a physician specializing in psychoneuroimmunology and longevity medicine, to uncover why so-called "mystery illnesses" are often the result of multiple unresolved threats interacting throughout the body and brain. She explains how chronic pain, chronic fatigue, trauma, surgery, infections, and even deeply rooted psychological patterns can keep the nervous system locked in survival mode, making true healing a complex but achievable process. Dr. Lesslar also shares why creating a sense of safety within the body is one of the most powerful yet overlooked foundations for recovery. If you've been searching for answers to persistent health challenges, this episode offers a compassionate, science-backed perspective that will change the way you think about chronic disease and what it takes to heal. Dr. Olivia Ly Lesslar is an Australian medical doctor with an expertise in psychoneuroimmunology and longevity medicine. Known as a “medical Sherlock Holmes,” she is recognised for her ability to synthesise insights across multiple specialties and unravel complex, multi-systemic conditions that defy conventional diagnostic frameworks. She is Director of Functional and Longevity Medicine at Cingulum Health in Sydney and Medical Architect and Founding Chief Medical Officer of Eir Liv, where she designed the clinical framework for a medicalised longevity atelier model. Internationally, she serves as Founding Chief Clinical and Standards Advisor to Elite Optimal Health Centre in Accra, Ghana, guiding its clinical standards and institutional development. Dr Lesslar holds leadership and advisory positions across more than thirty international organisations in neurotechnology, biotechnology, and space medicine, including Human Regenerator (UK), Kure (sydney), L’evive Labs (Singapore), Sens.ai (Canada), and Oxford Healthspan (UK). In 2025, she completed a seven-city speaking tour across Australia and New Zealand, presenting her original framework, The Nine Ancient Survival Threats, a psychoneuroimmunological model exploring the evolutionary roots of chronic disease. She holds academic appointments at Griffith University’s National Centre for Neuroimmunology and Emerging Diseases and at the Geneva College of Longevity Science. Her focus is on advancing integrative, patient-centred models that unite neuroscience, immunology, and systems-level thinking. SHOW NOTES: 0:39 Welcome to the podcast! 3:19 About Dr. Olivia Lesslar 4:02 Welcome her to the show! 5:10 Are they really “mystery illnesses”? 9:56 Chronic pain signals 11:58 Her traumatic injury 15:22 What is Psychoneuroimmunology? 16:59 When your body betrays you 20:16 Fear-based marketing 23:25 The impact of surgery 26:20 Assessing threats to the body 33:05 How to create safety in the body 36:57 The “schemas” that inform our health 40:16 Chronic Fatigue Syndrome 42:08 Her “index patient” 48:07 Why healing is multifactorial 51:45 Her framework for health 55:10 Her finale piece of advice 57:53 Thanks for tuning in! RESOURCES: Website: www.drolivialesslar.com [http://www.drolivialesslar.com] IG: @drolivialesslar [https://www.instagram.com/drolivialesslar] LinkedIn [https://www.linkedin.com/in/drolivialesslar]  Her peer-reviewed published research: ResearchGate profile [https://www.researchgate.net/profile/Olivia-Lesslar] Support this podcast at — https://redcircle.com/biohacker-babes-podcast/donat [https://redcircle.com/biohacker-babes-podcast/donations]