Recommended daily allowance
Recommended Daily Allowance (RDA)
Recommended Daily Allowance (RDA), pronounced /ɹɪˈkɑːmɛndɪd ˈdeɪli əˈlaʊəns/, is a guideline established by the Food and Nutrition Board of the National Academy of Sciences to indicate the daily dietary intake level of a nutrient considered sufficient by the Food and Nutrition Board to meet the requirements of nearly all (97–98 percent) healthy individuals in a particular life stage and gender group.
The term was first introduced in 1941 during the World War II era as a standard used to help improve the health of the U.S. population. The etymology of the term is straightforward, with "recommended" coming from the Latin word "recommendare", meaning to entrust or advise, "daily" from the Old English "dæglic", meaning occurring every day, and "allowance" from the Old French "alouer", meaning to allocate or allot.
Related Terms
- Dietary Reference Intake (DRI): A system of nutrition recommendations from the Institute of Medicine (IOM) of the National Academies (United States). It includes the RDA along with other values like the Adequate Intake (AI), the Tolerable Upper Intake Level (UL), and the Estimated Average Requirement (EAR).
- Micronutrient: Essential nutrients needed by the body in small amounts. Vitamins and minerals are examples of micronutrients, many of which have RDAs.
- Macronutrient: Nutrients that the body needs in large amounts, such as proteins, fats, and carbohydrates. While there are no RDAs for macronutrients, there are Acceptable Macronutrient Distribution Ranges (AMDRs).
See Also
External links
- Medical encyclopedia article on Recommended daily allowance
- Wikipedia's article - Recommended daily allowance
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