Book excerpt: Describes the relationship between food systems and the planetary boundaries at risk. Delineates the importance of food system related issues including biodiversity loss, greenhouse gas emissions, environmental degradation, and human health. Assesses the benefits of biodiversity-promoting food systems and describes the importance of shifting national, regional, and global policy to support them. Identifies the public health impacts of conventional food systems on consumer health. Demonstrates how to put biodiversity-promoting food systems into professional practice.