\"If you ever wondered how we age, if we can slow or even reverse aging, and if we can live a healthy 100 plus years, then David Sinclair\'s new book Lifespan, which reads like a detective novel, will guide you through the science and the practical strategies to make your health span equal your lifespan, and make your lifespan long and vibrant.\" Mark Hyman, MD, director of the Cleveland Clinic Center for Functional Medicine and #1 New York Times bestselling author