Critical approaches to the sustainability of food systems have come from many directions: consumption, marketing, procurement, processing, and farming. Sustainable diets offer a promising way to integrate health of people and the health of ecosystems. Since it is clear that the dominant pathway of the food system has led to diets that are unsustainable for human bodies and for landscapes, this talk explores contending ways to link health and environment. It includes some of the ways to make this link for theory, policy, and practice, focusing on relations of power that these approaches express or hide.