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The Dietary Reference Intakes (DRIs) are a comprehensive set of nutrient reference values for healthy populations that can be used for assessing and planning diets. DRIs have been published since 1997 and replace previously published Recommended Nutrient Intakes (RNIs). They are established by Canadian and American scientists through a review process overseen by the U.S. National Academies, which is an independent, nongovernmental body. The DRIs reflect the current state of scientific knowledge with respect to nutrient requirements and are published as a series of reports by the U.S. National Academies.
The final version of the most recent report, Dietary Reference Intakes for Calcium and Vitamin D, is now available. This and the other DRI reports can be viewed online and ordered from the National Academies Press.
There are several different types of DRI values, each with different uses depending on the situation. The following links provide more detail on the development and use of the DRIs.