The primary diet of a vegetarian consists mainly of plant-based foods, excluding meat, poultry, and fish. Vegetarians typically consume a variety of fruits, vegetables, grains, legumes, nuts, and seeds, which provide essential nutrients, fiber, and vitamins. Some vegetarians may also include dairy products and eggs in their diet, classifying them as lacto-vegetarians or ovo-vegetarians, respectively. The vegetarian diet is often adopted for health reasons, ethical considerations regarding animal welfare, or environmental concerns. Research indicates that a well-balanced vegetarian diet can offer several health benefits, such as reducing the risk of chronic diseases.