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Learn About Micronutrients

Micronutrients, or vitamins and minerals, are needed by the body in small amounts. On this page, find information about the different micronutrients and their roles in metabolism, growth, and health.

USDA Choline Database

Agricultural Research Service's (ARS) USDA Database for the Choline Content of Common Foods contains information on the amounts of six choline metabolites in food.

See also: the ARS USDA National Fluoride Database of Selected Beverages and Foods


Food Sources of Nutrients's lists of foods and beverages provides information on calcium, vitamin D, potassium, and iron. Find information about sodium in their Cut Down on Sodium handout. (Also in Spanish/Español)

Dietary Reference Intakes

The National Academies' Dietary Reference Intakes (DRI) report contains information about micro- and macronutrient requirements. Updated DRIs for calcium and vitamin D and sodium and potassium are also available.

More About Micronutrients

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