Dr. Greger is my favorite doctor I’ve never met. Unlike most internists (including my own, who is a very smart woman with a practice in what is arguably the best hospital in the world), Dr. Greger keeps up-to-date on the latest nutrition research. He has an uncanny ability to boil it all down into digestible, understandable bites. Sign up for his newsletter and/or browse his website to learn about any food or disease you have questions about. I’ve been resisting the shingles vaccine for years — against the advice of my doctor, my husband, and friends — but Dr. Greger convinced me to get one. That’s how good he is.