Leonard Guarente was 38 and by now a tenured professor at Massachusetts Institute of Technologies when he chose to devote himself to one of the most alluring complications in biology: ways to slow down getting older. Greater than a few a long time afterwards, the 72-yr-outdated Guarente is considered a https://www.wsj.com/health/wellness/longevity-antiaging-leonard-guarente-business-f55643f4?mod=health_lead_story