Nutrition databases are organized collections of information about the nutritional content of various foods. They provide details such as calories, vitamins, minerals, and macronutrients like proteins, fats, and carbohydrates. These databases are useful for individuals looking to manage their diet, track their nutrient intake, or make healthier food choices. Many nutrition databases are available online and can be accessed for free or through subscription services. They often include search features that allow users to find specific foods or recipes. Some popular examples of nutrition databases include USDA FoodData Central and MyFitnessPal.