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There are six major classes of nutrients found in food: carbohydrates, proteins, lipids (fats and oils), vitamins (both fat-soluble and water-soluble), minerals, and water. These six nutrients can be further categorized into three basic functional groups.
All foods provide nutrients. Energy is provided by the nutrients carbohydrate, fat and protein. Other nutrients include vitamins and minerals. The amount of energy and nutrients provided by food depends on its size, known as a portion. Different nutrients have different functions in the body to keep us healthy.nergy is provided by the nutrients carbohydrate, fat and protein. Other nutrients include vitamins and minerals. The amount of energy and nutrients provided by food depends on its size, known as a portion. Different nutrients have different functions in the body to keep us healthy.