In this episode of the Sober Head podcast, Dr. Esra Çavuşoğlu, PhD, hosts Dr. Oliver Zolman, MD.Dr. Oliver Zolman, a graduate of the University of Cambridge School of Medicine, works in the fields of longevity, aging biology, and regenerative medicine. Dr. Oliver, best known as Bryan Johnson’s longevity doctor, joins Sober Head podcast to explain his three-level system for reversing biological aging. He describes Level 1 as foundational, evidence-based habits like exercise, optimal sleep, diet, VO₂ max, and social health, which can extend lifespan by about 10-20%. Level 2 covers non-age-related factors and building a “health Rolodex” of top experts, while Level 3 focuses on organ rejuvenation through advanced tools like gene therapy and AI-guided MRI analysis. He cautions against overhyped biological-age claims and quick fixes like HGH, supports moderate caloric restriction and GLP-1 use under medical guidance, and views rapamycin as promising but still unproven in humans. Now working with Only Health in Istanbul, Zolman is helping test experimental therapies such as follistatin and telomerase to measure true organ-by-organ rejuvenation. Dr. Zolman is currently focusing on experimental therapies such as follistatin and telomerase, continuing his work by conducting organ-level measurements of actual regeneration. #EsraÇavuşoğlu #AyıkKafa #ElevatingLifeEvolvingHealth #Longevilab#DrOliverZolman #Longevity Dr. Oliver Zolman: Website: https://www.oliverzolman.com/ Instagram: https://www.instagram.com/oliver.zolman?utm_source=ig_web_button_share_sheet&igsh=ZDNlZDc0MzIxNw== Special thanks to T.C. Istanbul Gedik Universityhttps://www.gedik.edu.tr/en/ 00:00-03:33 Introduction03:33-05:05 From medicine to longevity science05:05-Measuring aging: 81 organs06:13-07:17 The 3 levels of longevity07:17-09:45 Level 1: The longevity basics 09:45-12:55 Sleep & recovery 12:55-19:23 Diet and biological age19:23-21:35 Level 2: Personalized health & access21:35-Level 3: gene therapy32:18-34:07 Key to longevity: organ rejuvenation34:07-36:28 Ideal exercise recommendations 36:28-43:15 GLP-1s, calorie restriction & rapamycin43:15-52:29 Myths & missteps in anti-aging53:57-56:40 Skin Longevity & energy-based treatments56:40-1:00:40 The Future of Longevity Medicine. Wrap up. *To subscribe to our channel* https://www.youtube.com/@ayikkafa *Dr. Esra Çavuşoğlu, PhD*Instagram: https://www.instagram.com/esracavusoglu/ https://www.instagram.com/longevilab Web: https://www.longevilab.com/hakkimizda#esra-cavusoglu *To Reach Us * [email protected]*About Ayık Kafa*Dr. Esra Çavuşoğlu, PhD, took her studies, starting from her personal treatmentexperiences and continuing with her clinical psychology education, to the nextlevel by completing her PhD focused on Addiction. Dr. Esra in Ayık Kafapodcast discusses the world’s latest technologies, protocols, products and research in the fields of Biohacking and Longevity, while sharing first-handinformation and experiences about the Disease of Addiction, as well as herlatest academic studies.*About Dr. Esra Çavuşoğlu, PhD*Longevilab’s founder, Dr. Esra, is a United States and internationally trainedclinical psychologist and a certified addiction therapist in New York. She servedas International Development Advisor on the Yale University Faculty ofMedicine Clinical Advisory Board. She is the founder and supervisor ofGaziantep Oya Bahadır Yüksel Rehabilitation Center, Dr. Esra is the designerand implementer of the Turkey Rehabilitation Model. Dr. Esra founded theContemporary Addiction Studies Association (ÇABAÇAD) in order to combatTurkey’s growing addiction problem.