Posted on May 25, 2026 by RINGOThe Diary Of A CEO and David Sinclair Dr. David Sinclair is a world-renowned Professor of Genetics at Harvard Medical School and the leading authority on longevity science. He is Founder of Lifespan.com and multiple biotechnology companies, Co-Chief Editor of the journal Ageing, and bestselling author of ‘Lifespan: Why We Age – And Why We Don’t Have To’.