Intermittent Fasting

At its simplest, intermittent fasting (IF) means cycling through periods of voluntary abstinence of food (or significant calorie reduction), interspersed with intervals of normal food intake. Monique Tello, MD, MPH, a Harvard Medical School professor and internal medicine physician at Massachusetts General Hospital, explains to Inverse what happens when people never get hungry enough to use up those fat stores. “A, we get fatter, and B, it’s all the things that go along with that,” she says.