Leonard Guarente was 38 and by now a tenured professor at Massachusetts Institute of Technology when he chose to devote himself to one of the most alluring issues in biology: the way to slow down aging. Greater than 3 decades later on, the 72-calendar year-aged Guarente is considered a grandfather https://www.wsj.com/health/wellness/longevity-antiaging-leonard-guarente-business-f55643f4?mod=health_lead_story