Dietary Reference Intakes (DRI) is the general term for a set of reference values that are used for planning and assessing nutrient intake for healthy people.
There are three types of reference values that are included in the DRIs. They are:
1. Recommended Dietary Allowances (RDA)
2. Adequate Intakes (AI)
An Adequate Intake (AI) is set when there is insufficient scientific data available to establish a RDA for specific age/gender groups.
AIs meet or exceed the amount needed to maintain a nutritional state of adequacy in nearly all members of a specific age and gender group.
3. Tolerable Upper Intake Levels (UL)
Here is a DRI example about megnesium daily value.
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