A document discusses the benefits of a plant-based diet and the environmental impacts of animal agriculture. It notes that most grains produced in the US are used to feed livestock, and that grain fed to livestock could feed 2 billion people instead. It also discusses the health risks of diseases associated with animal products and the reduced risk of various cancers and longer life expectancy associated with vegetarian and vegan diets. The document advocates eating a diet focused on plants in line with Michael Pollan's recommendations.