Recommended Dietary Intakes for Trace Elements
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New knowledge about trace element metabolism and changes in dietary habits dictate a need for a new approach in setting dietary standards. The Food and Nutrition Board of the Institute of Medicine has developed a new paradigm for setting dietary standards that involves the use of functional endpoints and multiple reference intakes for each age and gender group. Application of this paradigm to trace element dietary standards will be difficult because of the following limitations: Lack of specific, sensitive, functional indicators of dietary requirements for trace elements.
Little information on the functional or homeostatic response to chronically low or high trace element intakes.
Limited knowledge of the requirements of children, infants, and pregnant and lactating women.
Absence of a clear model for how to deal with trace element interactions. Future research in trace element nutrition should be designed to address these limitations.
KeywordsDietary Standard Zinc Intake Recommend Dietary Allowance Dietary Reference Intake Adverse Effect Level
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