A vegan diet is based on grains, legumes (dried beans and peas), fruits, vegetables, nuts, and seeds. It is a vegetarian diet and does not include animal products (meat, poultry, fish, seafood, dairy products, eggs, and honey) or ingredients derived from animals, including gelatin and lanolin. Vegan diets are chosen for a variety of reasons, including health benefits, environmental considerations, and animal welfare concerns. This entry provides information about nutritional considerations for those choosing vegan diets and describes the health effects of vegan diets.