Leonard Guarente was 38 and by now a tenured professor at Massachusetts Institute of Engineering when he made a decision to commit himself to The most alluring problems in biology: the way to slow down growing older. Over a few a long time afterwards, the 72-yr-outdated Guarente is considered a https://www.wsj.com/health/wellness/longevity-antiaging-leonard-guarente-business-f55643f4?mod=health_lead_story