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Scientific Knowledge Base: Nutrients. Anatomy and Physiology of the Digestive System. Dietary Guidelines. Dietary Reference IntakesAcceptable range of amounts of vitamins and minerals to avoid deficiencies for age and gender groupsFood guidelinesFood Pyramid Guide, basic guide for meal preparationsDaily valuesNeeded protein, vitamins, minerals, fats, cholesterol, carbohydrates, fiber, sodium, and potassium.
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