Dietary components needed in small quantities by the body (including vitamins, minerals, antioxidants, and phytochemicals) that are important and often essential for wellness.

Vitamins and minerals, which are needed in very small amounts (micrograms or milligrams per day), as distinct from fats, carbohydrates, and proteins which are macronutrients, since they are needed in considerably greater amounts.

Nutrients which are required in relatively large amounts by humans to maintain normal growth and other body functions.

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