Review of Dietary Reference Intakes for Selected Nutrients: Challenges and Implications for Federal Food and Nutrition Policy
By Barbara Devaney, Mary Kay Crepinsek, Ken Fortson,
and Lisa Quay. ERS project representative: Elizabeth Frazao
Contractor and Cooperator Report No. (CCR-28) 96 pp,
February 2007
Dietary Reference Intakes (DRIs) are the most recent set of nutrient-based reference values, which, together with recommended dietary assessment methods, are being used to update estimates of nutrient adequacy of population subgroups. Recent estimates suggest both dramatic dietary deficiencies and excesses for selected nutrients among some subgroups. This report takes a critical look at the studies and methods used to set DRIs. The findings show that errors in dietary recall data—either underreporting or overreporting of intakes—may partially explain the inadequacies and excessive intakes. In addition, the lack of sensitive, specific biochemical markers has resulted in DRIs for selected nutrients to be based on less than optimal data. Because the DRIs are used by food and nutrition assistance programs to set nutritional objectives, establish program benefits, and evaluate program outcomes, it is important to understand the issues involved in deriving the DRIs and how to interpret the results of dietary assessments.
This study was conducted by Mathematica Policy Research, Inc., under research agreement no. 43-3K06-06-3114 with the Economic Research Service. The views expressed are those of the authors and not necessarily those of ERS or USDA.
Keywords: Dietary assessment, dietary reference intake, DRI, nutrient adequacy, nutrient inadequacy, excessive intake, Food Assistance and Nutrition Research Program, FANRP, ERS, USDA
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Updated date: February 5, 2007
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