Food is Medicine (FiM), also known as Food as Medicine, integrates food and nutrition interventions into health care delivery with the primary goal to improve population health and address diet-related health conditions. To date, there has been little focus on the relation between FiM and climate change despite FiM’s involvement with 2 key drivers of climate change: health care delivery and food systems. FiM may be able to advance lifestyle medicine and population health objectives, as well as mitigate some of the health care and food-related drivers of climate change, by focusing on 4 key areas: (1) Increasing the absolute number and proportion of patients who follow plant-based diets; (2) reducing food waste; (3) reducing unnecessary health care utilization; and (4) lowering transportation-related greenhouse gas emissions related to food procurement. Measuring the ecological impact of FiM alongside clinical, utilization, and financial measures will require a different analytical approach than that used traditionally in health care. Ultimately, thoughtful, data-driven, and urgent interventions that span the food and health care sectors are needed to sustainably support not only FiM, but human, environmental, and planetary health as well.