Because "you are what you eat" is such a widely accepted truism, the choice of what we eat can evolve into rules that different cultures follow. Kosher, halal and vegetarianism are dietary practices that observant Jews, Muslims and Jains follow. Others follow certain dietary rules because of health: vegetarianism is popular for this reason, as are no-gluten, low-carb, low-fat and similar protocols. Discuss vegetarianism, veganism, gluten-free and other dietary practices in this section.