Robert J. Davis, Ph.D. Award-winning health journalist; Author, 'Coffee Is Good for You'

Robert J. Davis, PhD, is an award-winning health journalist whose work has appeared on CNN, PBS, WebMD, and in The Wall Street Journal. He is founder and editor-in-chief of Everwell.com and teaches at Emory University's Rollins School of Public Health. He's the author of a new book, "Coffee Is Good for You," on which this article is based, as well as "The Healthy Skeptic."