A geneticist and professor at Harvard Medical School, Sinclair has been on Time magazine’s 100 Most Influential People in the World list for his work on prevention and reversal of age-related disease and deterioration. He’s confident we can live healthier for longer — that is, we can increase our health span, and his first book offers a compelling prescription,including how an antioxidant in wine and chocolate can help. A little stress on the body can also go a long way, and that includes intermittent fasting, as Sinclair explained in an interview with Zoomer this past fall. “Your body should be a bellwether, and your doctor should let you know if fasting is fine. But if you are in good health, I really couldn’t recommend anything better for long-term health than being hungry a little bit during the day.”