Leonard Guarente was 38 and by now a tenured professor at Massachusetts Institute of Engineering when he made a decision to devote himself to one of the most alluring complications in biology: the way to decelerate ageing. More than 3 many years afterwards, the 72-yr-old Guarente is considered a grandfather https://www.wsj.com/health/wellness/longevity-antiaging-leonard-guarente-business-f55643f4?mod=health_lead_story