MICHAEL F. ROIZEN, MD, is the Chief Wellness Officer at the Cleveland Clinic, Chief Medical Consultant on The Dr. Oz Show, author of four #1 New York Times bestselling books, and originator of the popular RealAge.com website. He is board certified in anesthesiology and internal medicine. He's been recognized with an Ellie, an Emmy, and the Paul G. Rogers Award from the National Library of Medicine for Best Medical Communicator. He also chaired an FDA advisory committee and has published more than 175 peer-reviewed articles. He lives in Shaker Heights, Ohio. PETER LINNEMAN, PhD, is an expert in finance and real estate. ALBERT RATNER, PhD, is an expert in population economics.