This document compares and contrasts paleo, vegetarian, and vegan lifestyles. It outlines the main principles of each: paleo includes meat and eggs while avoiding dairy and grains; vegetarians avoid meat but some consume dairy and eggs; vegans consume no animal products. The pros and cons of each are discussed, with paleo cited as having more nutrients and fewer drawbacks than vegetarian or vegan diets. However, a balanced diet following the food pyramid with exercise is ultimately recommended.