The Science of Slowing Aging: Rapamycin, Genes, and the Quest for a Longer Health Span

In this episode of the Science of Skin Podcast, Dr. Ted Lain talks with Dr. Rich Miller, professor of pathology at the University of Michigan and director of the Paul F. Glenn Center for Aging Research, about the science of slowing biological aging.

Dr. Miller explains why lifespan and health span move together, not in opposition, and walks through decades of research using genetic mutants, calorie-restricted diets, and drugs like rapamycin, acarbose, canagliflozin, and 17 alpha-estradiol to extend lifespan in mice. The conversation covers how these interventions work through pathways like mTOR and glucose regulation, why some drugs affect males and females differently, and the surprising finding that many of these anti-aging effects hold up even when treatment starts in middle age rather than early in life.

The two also discuss the challenge of translating mouse research to humans, Dr. Miller's work developing "aging rate indicators" that could make human drug trials for aging far more practical, and his call for more dermatology involvement in aging research — including his hope to see skin aging studied alongside the organs his lab has already examined. The episode closes with a candid take on supplement industry claims and what the current evidence actually supports for slowing aging today.

⚠️ This content is for educational and informational purposes only and reflects the personal research findings and opinions of the speakers. It is not medical advice. The discussion involves animal studies and experimental research; consult a licensed healthcare provider for questions about your own health.

If you enjoyed this episode, please leave a 5-star rating and share with a colleague — word of mouth helps our podcast grow!