While it is our biological age that matters most to determine the length of healthspan or amount of time a person will maintain good health. Francis Palmer, MD, a world-renowned, board-certified facial plastic surgeon, and author of “What’s Your Number?” has spent more than three decades of his career helping people look younger by altering outside appearances, but says there’s a more sustainable way to feel and look younger by reducing your biological age, and the best part: no surgery is required. Dr. Francis Palmer, author of "What's Your Number?" visits with Mark Alyn on this episode.