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A Misunderstood Concept

Robert R. Wolfe, PhD; Sharon L. Miller, PhD

JAMA. 2008;299(24):2891-2893.

	Since this article does not have an abstract, we have provided the first 150 words of the full text and any section headings.

At periodic intervals the Food and Nutrition Board of the Institute of Medicine produces a report entitled the Dietary Reference Intakes (DRI). The recent DRI report for macronutrients (energy, carbohydrate, fiber, fat, fatty acids, cholesterol, protein, and amino acids) was published in 2005.¹ For each macronutrient, a series of values is published, along with a detailed review of all data used to derive those values. Those values for macronutrients are the estimated average requirement, the recommended dietary allowance (RDA), the tolerable upper intake level, and the adequate intake. Of these terms, the RDA is the most widely recognized and has the greatest influence on daily nutrition practices.

The RDA is defined as follows: "The recommended dietary allowance (RDA) is an estimate of the minimum daily average dietary intake level that meets the nutrient requirements of nearly all (97 to 98 . . . [Full Text of this Article]

Author Affiliations: Center for Translational Research in Aging and Longevity, Donald W. Reynolds Institute on Aging, University of Arkansas for Medical Sciences (Dr Wolfe); and SLM Consulting (Dr Miller), Little Rock, Arkansas.

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