Nutrition: Foundations for Life

Good Nutrition, continued

The Committee releases four Dietary Reference Intakes:   

• Estimated Average Requirement

• Recommended Daily Allowance (RDA)

• Adequate Intake (AI)

• Tolerable Upper Intake Level. 

If insufficient evidence is available to produce an RDA, an AI is reported instead. The Dietary Reference Intakes for various nutrients vary by age, as is illustrated by the table linked here.

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