Vegetarianism is often categorized by which animal-derived products are included:
Vegetarian diet: How to get the best nutrition - Mayo Clinic
Vegetarianism is a dietary practice that excludes meat, poultry, and seafood, prioritizing plant-based foods like fruits, vegetables, grains, and legumes. Research from institutions like Harvard Health and the Mayo Clinic confirms that well-planned vegetarian diets are nutritionally adequate and can significantly reduce the risk of chronic diseases. Common Types of Vegetarian Diets
