There are various types of vegetarianism, from a strictly "vegan" diet of all plant products ... The study, which looked at vegans, lacto-vegetarians and lacto-ovo vegetarians, found that vegans ...

According to the Vegetarian Society, a vegetarian is someone who lives on a diet of grains ... shellfish or by-products of slaughter. Lacto-ovo vegetarian: a vegetarian who eats dairy products ...