Estimated Average Requirement
Quick Summary
The Estimated Average Requirement (EAR) is a dietary guideline representing the nutrient intake level that meets the needs of 50% of a population. This is part of the broader Dietary Reference Intakes (DRIs) system, developed in the U.S. and Canada to guide healthy eating and prevent both nutrient deficiencies and chronic diseases.1
DRIs include four categories:
* EAR: Meets the needs of 50% of the population.1
* RDA (Recommended Dietary Allowance): Meets the needs of nearly all (97-98%) healthy individuals.1
* AI (Adequate Intake): Used when EAR and RDA cannot be determined due to insufficient evidence, based on observed intakes of healthy populations.1
* UL (Tolerable Upper Intake Level): The highest daily intake level unlikely to pose health risks.1
These guidelines help individuals plan diets and avoid excessive nutrient consumption.1
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