There is so much talk in the media about immunity, about the need to sleep more and eat less, about coffee, cholesterol, vitamins, fats, the dangers of smartphones and the benefits of dietary supplements! Which of this is true, and which is an outright lie from marketers? James Hamblin, MD and senior editor of The Atlantic, shares exclusively verified scientific information about the features and mechanisms of the human body. “Hamblin writes with sarcasm, humor, and a sense of wonder...His witty exploration of diets, supplements, multivitamins, energy drinks, and gluten is incredibly relevant work. He debunks medical and marketing myths... An educational, entertaining and slightly eccentric book." (Booklist) “This book answers all the questions you've asked yourself about your health, and many others that haven't even crossed your mind, although it wouldn't hurt. Even if you don't care about your health, you should read it..." (Walter Isaacson, bestselling author of Steve Jobs)