Estimated Average Requirement
Estimated Average Requirement (EAR) is a nutrient intake value that is estimated to meet the requirement of half the healthy individuals in a particular life stage and gender group. Before establishing the Dietary Reference Intakes (DRIs), the EAR is usually the first step.
Definition[edit | edit source]
The Estimated Average Requirement (EAR) is the intake level for a nutrient at which the needs of 50 percent of the population will be met. Because the needs of the other half of the population will not be met by this amount, the EAR is increased by about 20 percent to arrive at the Recommended Dietary Allowance (RDA).
Purpose[edit | edit source]
The EAR is used to examine the probability that usual intake is inadequate or excessive. The EAR cut-point method is used to assess the adequacy of nutrient intakes for groups, not for individuals.
Calculation[edit | edit source]
The EAR is derived from a statistical evaluation of the relationship between nutrient intake and a criterion of adequacy in a population group. The criterion of adequacy is a physiological or functional endpoint that reflects the adequacy of the nutrient intake.
Limitations[edit | edit source]
The EAR is not a recommended intake, and it is not adequate for all individuals due to variability in requirements.
See also[edit | edit source]
- Dietary Reference Intakes
- Recommended Dietary Allowance
- Adequate Intake
- Tolerable Upper Intake Levels
References[edit | edit source]
| Estimated Average Requirement Resources | |
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