Nutrient Reference Values (NRV) cont’d

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Estimated Average Requirement (EAR)
The average daily amount of a nutrient estimated to meet the biochemical and physiological needs of half the individuals in a given age and gender group
Established from functional and clinical assessments
Used to assess the nutrient adequacy of populations, not individuals
Recommended Dietary Intake (RDI)
The average daily amount of a nutrient considered adequate to meet the needs of practically all healthy individuals in a given gender and age category
The amounts are set high enough above the EAR to account for individual differences. RDI = EAR x 1.2
Serves as a goal for intake for individuals and not as nutrient adequacy for populations

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Foundations of Nutrition