Question

The average daily dietary nutrient intake level sufficient to meet the nutrient requirement of nearly 97-98 percent healthy individuals in a particular life stage and gender group is referred to as:

• A. Recommended Dietary Allowances (RDA)
• B. Estimated Average Requirement (EAR)
• C. Safe Requirement
• D. Tolerable Upper Limit (TUL)

Hint:

Remember the statistical thresholds:
- \(50\%\) of healthy individuals \(\rightarrow\) EAR (Estimated Average Requirement).
- \(97-98\%\) of healthy individuals \(\rightarrow\) RDA (Recommended Dietary Allowance).

Answer 1

The Correct Option is A

Step 1: Understanding the Concept:
Dietary Reference Intakes (DRIs) consist of several quantitative values used to plan and assess nutrient intakes of healthy people.

Step 2: Detailed Explanation:
Let us define the primary nutrient standards:
1. Recommended Dietary Allowance (RDA): The daily dietary intake level of a nutrient considered sufficient to meet the requirements of nearly all (\(97\%\) to \(98\%\)) healthy individuals in a specific life-stage and gender group. It is mathematically calculated from the EAR by adding a safety margin (usually 2 standard deviations):
\[ \text{RDA} = \text{EAR} + 2\text{SD} \] 2. Estimated Average Requirement (EAR): The intake level estimated to meet the requirement of half (\(50\%\)) of the healthy individuals in a group.
3. Tolerable Upper Intake Level (TUL): The maximum daily intake level that is unlikely to pose risks of adverse health effects to almost all individuals.
Thus, the \(97-98\%\) criterion defines the RDA.

Step 3: Final Answer
The correct option is (A).