Ultra-processed foods harm people’s health and have ramifications for the overall health of the planet. While some food processing is necessary for recipes and feeding the globe, the food industry needs to make changes to ensure that processing doesn’t turn foods into harmful substances. Dr. Tim Harlan and Dr. Rob Lustig discuss the harmful ingredients in ultra-processed foods and how they impact metabolic health—as well as why the food industry has a moral obligation to make drastic changes.