A Limited Ingredient Diet (LID) is a type of eating plan that focuses on a small number of ingredients. This approach is often used to help identify food sensitivities or allergies, as it minimizes the variety of foods consumed. By reducing the number of ingredients, individuals can more easily track their reactions to specific foods. LIDs are commonly used for pets, particularly dogs and cats, to manage food allergies or intolerances. These diets typically include a single source of protein and a limited number of carbohydrates, making it easier for pet owners to monitor their pets' health and well-being.