Leonard Guarente was 38 and currently a tenured professor at Massachusetts Institute of Technological innovation when he decided to dedicate himself to The most alluring difficulties in biology: how to decelerate getting old. Over 3 decades afterwards, the seventy two-year-previous Guarente is considered a grandfather from the booming longevity motion. https://www.wsj.com/health/wellness/longevity-antiaging-leonard-guarente-business-f55643f4?mod=health_lead_story