"Recommended Daily Allowances" for Vitamin C
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چکیده
منابع مشابه
Are recommended daily allowances for vitamin C adequate?
Recommended daily allowances, U.S.A., for ascorbic acid are several times the minimum daily requirement of about 10 mg to prevent clinical symptoms in adults. The recommended daily allowances reflect the levels of ascorbic acid required to produce tissue saturation in human beings, so that higher doses are promptly excreted in the urine. In various investigations, responses to ascorbic acid wer...
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Reflecting on the previous articles on micronutrients published in this journal and elsewhere, we concluded that a crucial aspect invaluable to developing European regulation in this field still needed to be addressed. This concerns the nature of the so-called recommended daily allowances (RDAs); that is the average daily dietary intake level that is sufficient to meet the nutrient requirements...
متن کاملThe use of recommended daily allowances to assess dietary adequacy.
Using the recommended daily allowance (RDA) to assess dietary adequacy implies making a direct comparison between RDA and some measure of dietary intake. The value and usefulness of doing so must clearly depend on the limitations of each. By definition the RDA are intended to cover ‘the average amount of the nutrient, which should be provided per head in a group of people if the needs of practi...
متن کاملRecommended dietary allowances (RDAs) of nutrients?
Recommended Dietary Allowances (RDAs) refer to the average dietary intake level that adequately meets the nutritional needs of most people. Prepared by the Food and Nutrition Board of the National Academy of Sciences, RDAs are periodically updated to establish ?standards to serve as a goal for good nutrition? for populations, not individuals. They include nutrients which have been scientificall...
متن کاملRecommended dietary allowances harmonization in Southeast Asia.
Issues and opportunities for RDA harmonization within the SEA region were first raised during the First Regional Forum and Workshop "RDAs: Scientific Basis and Future Directions", held in Singapore in March 1997. A regional review on RDAs in SEA showed general similarities for the different RDAs, although in some cases a country listed an exceptionally high or low RDA for a particular nutrient ...
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ژورنال
عنوان ژورنال: Proceedings of the National Academy of Sciences
سال: 1973
ISSN: 0027-8424,1091-6490
DOI: 10.1073/pnas.70.4.969