Types of vegetarian diets

Vegetarian diets vary in what foods they include and exclude:

• Lacto-vegetarian diets exclude meat, fish, poultry and eggs, as well as foods that contain them. Dairy products, such as milk, cheese, yogurt and butter, are included.
• Ovo-vegetarian diets exclude meat, poultry, seafood and dairy products, but allow eggs.
• Lacto-ovo vegetarian diets exclude meat, fish and poultry, but allow dairy products and eggs.
• Pescatarian diets exclude meat and poultry, dairy, and eggs, but allow fish.
• Vegan diets exclude meat, poultry, fish, eggs and dairy products, as well as foods that contain these products.

Some people follow a diet that is mostly plant-based, but they still eat meat, dairy, eggs, poultry and fish on occasion or in small quantities. This is sometimes called a flexitarian diet.