Nutrients
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Nutrients are substances in food that have specific physiological effects, which are necessary for maintaining the growth, development, activity, reproduction, and normal metabolism of the body.
Macronutrients are nutrients that are present in relatively large amounts in the body and are needed in larger quantities. These include proteins, fats, and carbohydrates.
Micronutrients are nutrients that are present in relatively small amounts in the body and are needed in smaller quantities, mainly referring to vitamins and minerals.
Water is an essential nutrient for the body.
Other dietary components include dietary fiber and phytochemicals.