He's 91. He's Injecting Young Mitochondria Into His Body.

At 91, physicist Dr. John G. Cramer has received an experimental mitochondrial transplant — injecting young mitochondria harvested from blood platelets directly into his body. The goal: replace his damaged mitochondrial DNA and live to 129. In this episode of Health Longevity Secrets, Robert Lufkin MD sits down with Dr. John G. Cramer — Emeritus Professor of Physics at the University of Washington and author of "How to Live Much Longer" — to unpack a unifying theory of aging built around mitochondrial DNA damage, why replication errors (not free radicals) are the real driver of cellular decline, and what it actually feels like to receive escalating doses of "Mitlets" — liposome-packaged fresh mitochondria — at a Texas right-to-try clinic. From the 16,569-base-pair mitochondrial genome to Mitrix Bio's manufacturing platform, from David Sinclair's information theory to James McCully's landmark pediatric cardiac rescues, this is both a masterclass in why energy is the master variable of healthspan and a first-person account of one physicist's extraordinary bet on his own biology. CHAPTERS: 00:00 — Introduction: The Oldest Young Human on the Planet 01:18 — Meet Dr. John Cramer: Physicist Turned Longevity Pioneer at 91 03:45 — Why a Physicist Became Obsessed with Aging 06:20 — Mitochondrial DNA Damage as the Root Cause of Aging 09:40 — The 16,569-Base-Pair Mitochondrial Genome Explained 13:05 — Replication Errors vs. Free Radicals: Correcting Denham Harman 16:30 — Damage Doubling Time: 12 Years Until 65, Then 3–4 Years 19:50 — David Sinclair's Information Theory of Aging 23:15 — James McCully and the Birth of Mitochondrial Transplantation 27:00 — "No Negative Results, Only Spectacular Successes" 30:25 — Mitrix Bio, Tom Benson, and the Mitlet Platform 34:10 — Inside Cramer's Four Texas Right-to-Try Sessions 38:30 — Arm Injection, Belly Fat, and the IV Mainline That Worked 42:15 — What It Actually Feels Like to Receive Young Mitochondria 45:40 — Haplogroup H2A1G1 and the Norwegian Great-Grandmother 48:20 — The Economics: Scaling Mitlets to the World 51:05 — Target Age 129: Becoming the Oldest Young Human 54:30 — What Dr. Cramer Wants You to Do Tomorrow Morning 57:00 — Final Reflections and Where to Find the Book KEY TAKEAWAYS: • Aging may be a single problem — accumulating damage to the 16,569-base-pair mitochondrial genome — not the hundred separate problems medicine currently treats • Replication errors, not free radicals, are now understood to be the primary driver of mitochondrial DNA damage after age 65 • Mitochondrial transplantation (delivering fresh, functional mitochondria via Mitlets) has already been used in pediatric cardiac patients with zero negative outcomes • The damage doubling time accelerates sharply after 65 — from a 12-year doubling to just 3–4 years — making early intervention critical • Dr. Cramer completed 4 escalating right-to-try sessions in Texas; IV delivery was the most systemically effective method STUDIES & SOURCES MENTIONED: • Cramer J.G. & Benson T. — Cellular Bioenergetic Crisis (CBC) white paper — https://faculty.washington.edu/jcramer/Bio/CBC.pdf • Harman D. (1972) — The Biologic Clock: The Mitochondria? — https://pubmed.ncbi.nlm.nih.gov/5016631/ • López-Otín C. et al. — The Hallmarks of Aging, Cell 2013 — https://pubmed.ncbi.nlm.nih.gov/23746838/ • Doulamis I.P., McCully J.D. et al. — Mitochondrial Transplantation for Ischemia Reperfusion Injury — https://pubmed.ncbi.nlm.nih.gov/34080142/ • Emani S.M., McCully J.D. et al. — Autologous Mitochondrial Transplantation for Dysfunction After Ischemia-Reperfusion Injury, J Thorac Cardiovasc Surg 2017 — https://pubmed.ncbi.nlm.nih.gov/28283239/ • Nature Metabolism — Recommendations for Mitochondria Transfer and Transplantation Nomenclature and Characterization (2025) — https://www.nature.com/articles/s42255-024-01200-x ───────────────────────────────── 🔔 Subscribe for more evidence-based health insights 📖 Dr. Lufkin's book "Lies I Taught in Medical School": https://robertlufkinmd.com/lies/ 📰 Substack newsletter: https://robertlufkinmd.substack.com 🌐 Website: https://robertlufkinmd.com CONNECT WITH DR. JOHN CRAMER: • UW faculty page: https://faculty.washington.edu/jcramer/ • Book "How to Live Much Longer": https://www.amazon.com/How-Live-Much-Longer-Cramer/dp/B0DV3ZW5T6 • Mitrix Bio: https://mitrix.bio/ — **Enjoyed this episode?** Reviews on Apple Podcasts are the #1 way to help the show grow. Tap here to leave one in 30 seconds: https://podcasts.apple.com/us/podcast/health-longevity-secrets/id1585563694 #MitochondrialTransplant #JohnCramer #Longevity #RobertLufkinMD