Recommended Dietary Allowance


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allowance

 [ah-low´ans]
something permitted or allowed.
recommended daily allowance term popularly used as a synonym for recommended dietary allowance.
recommended dietary allowance (RDA) the amount of nutrient and calorie intake per day considered necessary for maintenance of good health, calculated for males and females of various ages and recommended by the Food and Nutrition Board of the National Research Council. See Appendices 4 and 5. Popularly called recommended daily allowance.

recommended daily allowance

Any of the guidelines produced by the Food and Nutrition Board of the National Research Council (US) for the amount of a vitamin, mineral or other essential nutrient that should be ingested every day by a normal person engaged in average activities. RDAs are increased for increased activity, body growth and size, pregnancy, lactation, and adverse environmental conditions; RDAs assume a state of wellness and are poorly applicable in sick, traumatised and/or burned patients.

A criticism of the RDA is that it was established by the US Food and Nutrition Board in 1941, at a time when sound dieting practices were rare and nutritional deficiencies not uncommon. Malnutrition is now rare in the US, as many foods are supplemented with the necessary vitamins and minerals; many nutritionists now prefer the Daily Value standard.

rec·om·mend·ed di·e·tar·y al·low·ance

(RDA) (rek'ŏ-mend'ĕd dī'ĕ-tar-ē ă-low'ăns)
The average daily intake of a nutrient judged sufficient to meet the requirements of most healthy people, as categorized by gender and age.

Recommended Dietary Allowance (RDA)

The Recommended Dietary Allowances (RDAs) are quantities of nutrients in the diet that are required to maintain good health in people. RDAs are established by the Food and Nutrition Board of the National Academy of Sciences, and may be revised every few years. A separate RDA value exists for each nutrient. The RDA values refer to the amount of nutrient expected to maintain good health in people. The actual amounts of each nutrient required to maintain good health in specific individuals differ from person to person.

recommended dietary allowance,

n a guideline developed by the National Research Council's Food and Nutrition Board to aid in adequate nutritional intake of specific vitamins and minerals. Aimed at preventing nutritional deficiencies and does not define the optimum intake levels for an individual.
References in periodicals archive ?
3% of the subjects in this study ingested recommended dietary allowances of protein (1 g/kg).
Whole body net protein balance was greater with protein intake above recommended dietary allowance.
Now, rather than eating the recommended dietary allowance of around 2,000 calories a day, Anne is consuming fewer than 500.
But despite increasing the recommended dietary allowance (RDA) for vitamin D in its new guidelines, the Institute of Medicine (IOM) says the evidence that vitamin D supplementation may help with these conditions is inconclusive, and that vitamin D is proven only to help maintain strong bones.
This level is lower than the recommended dietary allowance (1 microgram/kg body weight/day).
The current recommended dietary allowance for calcium of 1,200 mg/day for people older than 50 was supported by the results of the calcium and vitamin D trial that was part of the Women's Health Initiative.
Several pediatrics texts cite the recommended dietary allowance of 100 cal/kg.
To help control other dietary factors that affect immune response, each participant received a capsule containing 50 percent of the recommended dietary allowance for essential micronutrients.
But there is currently no recommended dietary allowance for adults, so it is difficult to judge how much a person actually needs.
RECOMMENDED DIETARY ALLOWANCE FOR IRON FOR VEGETARIANS AGE IRON (MG) 1-3 years 12.
The recommended dietary allowance (RDA) for vitamin C should be officially doubled to a new level of 120 milligrams per day, with potential benefits for everything from heart disease to cataracts and cancer, suggest researchers from the Linus Pauling Institute at Oregon State University, Corvallis.
The institute has called on the government to double the recommended dietary allowance of vitamin C to 120 milligrams a day.

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