Food databases are organized collections of information about various foods, including their nutritional content, ingredients, and preparation methods. These databases help individuals, researchers, and health professionals access detailed information about what they eat, making it easier to track dietary habits and make informed choices. Many food databases are available online and can be used for various purposes, such as meal planning, calorie counting, and understanding food allergies. Popular examples include the USDA National Nutrient Database and MyFitnessPal, which provide users with comprehensive data on thousands of food items.