Dietary Reference Intakes (DRIs)


Dietary Reference Intakes (DRIs) are nutrient reference values developed by the National Academies of Sciences, Engineering and Medicine's (Academies) Food and Nutrition Board (FNB) and are intended for healthy people. These values, which have been established for 22 age, gender and condition groups, include:

  • Estimated Average Requirement (EAR): average daily nutrient intake levels estimated to meet the requirements of half (50%) of the healthy individuals in a group.
  • Recommended Dietary Allowance (RDA): average daily level of intake sufficient to meet the nutrient requirements of nearly all (97%-98%) healthy people.
  • Adequate Intake (AI): established when evidence is insufficient to develop an RDA and is set at a level assumed to ensure nutritional adequacy.
  • Tolerable Upper Intake Level (UL): maximum daily intake unlikely to cause adverse health effects.

DRI Chart

More information about the FNB’s DRIs can be found at the Academies web-site:
Dietary Reference Intake InformationExiting NLM Site

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