You may have heard about the so-called ‘Planetary Health Diet.’ In January of 2019, a group of 37 leading researchers on sustainability and nutrition from 16 countries published the EAT-Lancet Commission on Healthy Diets From Sustainable Food Systems. Its objective was to answer one vital question: Can we feed a future population of 10 billion people a healthy diet within planetary boundaries? We discuss the conclusions of the report and address some misconceptions that have sprung up since its publication.