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.
References in periodicals archive ?
Iron was lower than the Recommended Dietary Allowance in 86% and 90% of men and women, respectively.
Serum 25-(OH)D levels increased to above 20 ng/mL in 98% of women on the 800-IU dose, which is the current recommended dietary allowance of vitamin D to maintain normal serum levels in at least 98% of people, he said.
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).
For example, the general recommended dietary allowance (RDA) for vitamin D is 600 IU per day, but a person at risk for osteoporosis should get at least 800 IU as well as 1,200 mg of calcium to help prevent falls and injury.
The Recommended Dietary Allowance for zinc established by the Institute of Medicine is 11 mg for men and 8 mg for women.
-- 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.
The Recommended Dietary Allowance (RDA) is the average daily dietary intake level that is sufficient to meet the nutrient requirements of nearly all (97-98%) healthy individuals in each life-stage and gender group (13).
Based on the lower absorption of iron from a plant-based diet, the Institute of Medicine recommends that vegetarians (except those age birth to 1 year) get 1.8 times more iron than non-vegetarians, as indicated below: RECOMMENDED DIETARY ALLOWANCE FOR IRON FOR VEGETARIANS AGE IRON (MG) 1-3 years 12.6 4-8 years 18 9-13 years 14.4 Boys, 14-18 years 19.8 Girls, 14-18 years(*) 27 Men 19-30 years 19.8 Women 19-50 years(**) 32.4 Women, 51 years and older 19.8 Pregnant Women 48.6 Breastfeeding Women 16.2 (18 mg if age 14-18 years) (*) 20.6 mg if using oral contraceptives (**) 19.6 mg if using oral contraceptives

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