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Foods to Avoid There are many variations of vegetarianism, each with different restrictions. Lacto-ovo vegetarianism, the most common type of vegetarian diet, involves eliminating all meat, poultry and fish. Other types of vegetarians may also avoid foods like eggs and dairy. A vegan diet is the most restrictive form of vegetarianism because it bars meat, poultry, fish, eggs, dairy and any other animal products.
