Today’s episode is about what Americans don’t get about food—and the historical origins of our diet delusions. Our guest is Dr. David Ludwig, an endocrinologist who has researched and written on obesity and diet. He explains why scientists still haven't arrived at a consensus on obesity, why he thinks the conventional wisdom about calories and fat is wrong, what he thinks is really going on, and why the history of diet advice has been so wrong in the last half-century. On Friday, we'll continue the conversation on diet and obesity with an episode on the next generation of weight-loss medication, which could change the way America thinks about self-image and obesity forever. If you have questions, observations, or ideas for future episodes, email us at PlainEnglish@Spotify.com. You can find us on TikTok at www.tiktok.com/@plainenglish_ Host: Derek Thompson Guest: David Ludwig Producer: Devon Manze Learn more about your ad choices. Visit podcastchoices.com/adchoices