Recommended Dietary Allowances are calculated based on which of the following amounts?

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Recommended Dietary Allowances (RDAs) are calculated based on Estimated Average Requirement (EAR), which is the daily intake level of a nutrient that is estimated to meet the needs of half the healthy individuals in a particular life stage and gender group. The RDA for a nutrient is then set higher than the EAR to ensure that the needs of almost all (97-98%) healthy individuals in that group are met. The Upper Tolerable Limit (UL) is used to establish safe upper limits of nutrient intake to avoid toxicity, while Adequate Intake (AI) is used when there is insufficient scientific evidence to determine an EAR or RDA. The Lower Tolerable Limit (LTL) is not used to calculate RDAs as it represents the minimum amount of a nutrient that is necessary to prevent deficiencies in individuals.

Recommended Dietary Allowances Are Calculated Based on Which of the Following