dietary reference intake (DRI)
a set of reference values for energy and nutrients that can be used for planning and assessing diets for healthy people-established by the National Academy of Sciences (NAS)-based on the latest scientific evidence-aim to prevent nutrient deficiencies-separate recommendations are made for different groups of people
Dietary Reference Intake (DRI) is the set of nutrient reference values established by the Institute of Medicine of the National Academies in the United States. These reference values provide a framework for evaluating and planning diets and nutritional interventions for healthy people, as well as identifying the possible risk of inadequate or excessive intake of nutrients.
The DRIs consist of four reference values, which include the Estimated Average Requirement (EAR), Recommended Dietary Allowance (RDA), Adequate Intake (AI), and Tolerable Upper Intake Level (UL). The EAR indicates the average amount of a nutrient that meets the needs of 50% of a healthy population group, whereas the RDA is the amount of a nutrient that covers the requirement of nearly all healthy individuals, about 98%. AI is the amount of nutrient recommended when there is insufficient data to establish an EAR, and the UL refers to the maximum level of nutrient intake that is not likely to cause adverse health effects in nearly all individuals.
The DRIs apply to healthy individuals, and they may vary according to factors such as age, gender, physical activity, and health status. They are intended to promote public health by providing guidance on adequate nutrient intake, helping prevent nutrient deficiencies, and reducing the risk of chronic diseases associated with poor nutrition.
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