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RDA
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Figure 1: Theoretical frequency distribution of individual requirements (same sex and age group) for (A) a typical essential nutrient and (B) energy. (A) The recommended dietary allowance is set at the upper end of the distribution. For a few nutrientsā€”for example, iron in womenā€”the frequency distribution of requirement is not Gaussian but skewed. (B) The recommended allowance is in the centre of the distributionā€”the mean or medianā€”so that half of the population need more and half need fewer calories per day than the recommended daily allowance (RDA).
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RDA

diet
Also known as: Recommended Dietary Allowance
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Figure 1: Theoretical frequency distribution of individual requirements (same sex and age group) for (A) a typical essential nutrient and (B) energy. (A) The recommended dietary allowance is set at the upper end of the distribution. For a few nutrientsā€”for example, iron in womenā€”the frequency distribution of requirement is not Gaussian but skewed. (B) The recommended allowance is in the centre of the distributionā€”the mean or medianā€”so that half of the population need more and half need fewer calories per day than the recommended daily allowance (RDA).
Figure 1: Theoretical frequency distribution of individual requirements (same sex and age group) for (A) a typical essential nutrient and (B) energy. (A) The recommended dietary allowance is set at the upper end of the distribution. For a few nutrientsā€”for example, iron in womenā€”the frequency distribution of requirement is not Gaussian but skewed. (B) The recommended allowance is in the centre of the distributionā€”the mean or medianā€”so that half of the population need more and half need fewer calories per day than the recommended daily allowance (RDA).

The term RDA stands for Recommended Dietary Allowance. It is a set of dietary standards established to help individuals plan healthy diets and avoid consuming excessive amounts of nutrients. These recommendations are determined by scientific bodies and are intended to meet the nutrient requirements of nearly all healthy individuals within a specific life stage.12

The concept of RDAs was reframed in the 1990s into Dietary Reference Intakes (DRIs), which consider not only preventing deficiency diseases but also reducing the risk of chronic diseases. DRIs include four categories of reference values: the Estimated Average Requirement (EAR), the Recommended Dietary Allowance (RDA), the Adequate Intake (AI), and the Tolerable Upper Intake Level (UL). These guidelines serve as a model for other countries in setting their own nutritional standards.2

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4 Britannica Sources
  1. human nutrition - Dietary Reference Intakes
  2. RDA
  3. human nutrition - Minerals
  4. human nutrition - Nutrient recommendations

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