Includes bibliographical references (pages 325-347) and index.

An expansion of the 2014 New York Times op-ed of the same title, Always Hungry presents a new way to think about weight loss, diet, and health. Research shows that calorie counting does not work for weight loss: one diet causes weight gain whereas another diet with the same calorie count doesn't. It's your fat cells that are to blame for causing excessive hunger and increased weight. By eating the wrong foods, our fat cells are triggered to take in too many calories for themselves, setting off a dangerous chain reaction of increased appetite and a slower metabolism. Now, Harvard Medical School endocrinologist David Ludwig, MD, PhD, offers a plan that will turn dieting on its head, teaching readers to reprogram their fat cells, tame hunger, boost metabolism, and lose weight -- for good.