Leonard Guarente was 38 and already a tenured professor at Massachusetts Institute of Technology when he decided to commit himself to Among the most alluring issues in biology: ways to decelerate growing old. A lot more than three decades later on, the 72-yr-previous Guarente is considered a grandfather in the https://www.wsj.com/health/wellness/longevity-antiaging-leonard-guarente-business-f55643f4?mod=health_lead_story