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 ?
Recommended Dietary Allowance (RDA) - is the average daily intake level sufficient to meet nutrient requirements of almost all healthy individuals.
Although the trial's results failed to prove the study's primary hypothesis that a daily supplement of calcium and vitamin D would significantly cut the incidence of hip fractures in postmenopausal women aged 50-79, the trial produced enough positive results to support the existing recommended dietary allowance, Dr.
as the Food and Nutrition Board of the National Academy of Sciences increases the recommended dietary allowance for vitamin C.
Passive smokers need more than the recommended dietary allowance (RDA) of vitamin C to make up for their losses, the researchers contend.
The beneficial effects of magnesium were more evident in participants with dietary magnesium intake below the Recommended Dietary Allowance.
In addition, each glass provides 100% of the recommended dietary allowance (RDA) of vitamin C, 40% of the RDA of vitamin A and 25% of the RDA for vitamins D, E, K, B1 and B6.
What to do: You can get the Recommended Dietary Allowance (400 micrograms a day) by eating a diet rich in fruits and vegetables.
Along with the anti-radiation drug potassium iodide, scientists recommend a vitamin pill to plug any nutritional deficiencies in the Recommended Dietary Allowance, a standard established by the U.
The recommended dietary allowance for salt in adults is four grams per day, which would be 1.
Although the recommended dietary allowance for zinc is 8 mg/day in women and 11 mg/day in men, these findings suggest that higher levels of intake may be beneficial.
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.
RECOMMENDED DIETARY ALLOWANCE FOR IRON FOR VEGETARIANS AGE IRON (MG) 1-3 years 12.

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