#379 – Jeff Zwiefel: The Future Of Longevity, Life Time Gyms Success, Personalized Supplements, The Most Important Health Biomarkers, Testing Your Mitochondria, Interpreting Lab Data, Healthspan Vs. Lifespan, Who To Trust, And More!
By Malisa Ray / November 6, 2026The Melanie Avalon Biohacking Podcast Episode – #379 – Jeff Zwiefel LISTEN ON APPLE PODCASTS TRANSCRIPT GET PODCAST UPDATES Jeff Zwiefel is the former President and Chief Operating Officer ofLife Time, where he played a pivotal role in shaping the company’s evolution over more than two decades. A nearly 40-year veteran in the fitness and wellness […]