There are six classes of nutrients: carbohydrates (CHO), proteins, fats, vitamins, minerals and water. CHO, proteins, and fat, also called macronutrients, are the energy providing nutrients. Vitamins and minerals, also called micronutrients, are needed in small amounts to help in energy metabolism. Water is the most abundant nutrient in the body and is essential for the normal functioning of all the organs in the body. All six nutrients will be discussed in detail throughout the chapter.
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