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Are the Recommended Dietary Allowances for Vitamins Appropriate for Elderly People?

Abstract

BACKGROUND

An adequate vitamin intake is essential for a good nutritional status, especially in older women, who are more sensitive to nutritional deficiencies. The American, European and Italian Recommended Dietary Allowances (RDAs) derive mainly from studies on adults, and it is not clear whether they also apply to elderly people. Comparing the RDAs with the actual vitamin intake of a group of healthy older women could help to clarify the real needs of elderly people.

OBJECTIVE

Our aim was to compare the American, European, and Italian RDAs with the actual vitamin intake of a group of healthy older women.

DESIGN

This was a cross-sectional study.

PARTICIPANTS

The study included 286 healthy women aged older than 65 years.

MAIN OUTCOME MEASURES

For each micronutrient, the 50th percentile of the distribution of its intake was considered as the average requirement, and the corresponding calculated RDA for our sample was the average requirement×1.2, as recommended by the US Food and Nutrition Board. This calculated RDA was then compared with the American, European, and Italian RDAs.

STATISTICAL ANALYSES PERFORMED

Student's t test or the Mann-Whitney test (after checking the normal distribution of the micronutrient) for continuous variables; the χ(2) test for categorical variables.

RESULTS

The calculated RDA were 2,230 μg retinol equivalents for vitamin A, 2.8 μg for vitamin B-12, 0.9 mg for thiamin, 1.4 mg for riboflavin, 3.6 mg for pantothenic acid, 1.4 mg for vitamin B-6, 320 μg for folic acid, and 115 mg for vitamin C.

CONCLUSIONS

Our findings suggest that the current RDAs are adequate for older women's intake of riboflavin, vitamin B-6, and folic acid, but should be raised for vitamin B-12 and for vitamin C.

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    MeSH

    Aged
    Aged, 80 and over
    Ascorbic Acid
    Body Mass Index
    Body Weight
    Cross-Sectional Studies
    Dietary Carbohydrates
    Dietary Fats
    Dietary Fiber
    Dietary Proteins
    Energy Intake
    Female
    Folic Acid
    Humans
    Micronutrients
    Nutrition Assessment
    Nutritional Status
    Pantothenic Acid
    Portion Size
    Recommended Dietary Allowances
    Riboflavin
    Vitamin A
    Vitamin B 12
    Vitamin B 6

    Pub Type(s)

    Journal Article

    Language

    eng

    PubMed ID

    26048533

    Citation

    Bolzetta, Francesco, et al. "Are the Recommended Dietary Allowances for Vitamins Appropriate for Elderly People?" Journal of the Academy of Nutrition and Dietetics, vol. 115, no. 11, 2015, pp. 1789-97.
    Bolzetta F, Veronese N, De Rui M, et al. Are the Recommended Dietary Allowances for Vitamins Appropriate for Elderly People? J Acad Nutr Diet. 2015;115(11):1789-97.
    Bolzetta, F., Veronese, N., De Rui, M., Berton, L., Toffanello, E. D., Carraro, S., ... Sergi, G. (2015). Are the Recommended Dietary Allowances for Vitamins Appropriate for Elderly People? Journal of the Academy of Nutrition and Dietetics, 115(11), pp. 1789-97. doi:10.1016/j.jand.2015.04.013.
    Bolzetta F, et al. Are the Recommended Dietary Allowances for Vitamins Appropriate for Elderly People. J Acad Nutr Diet. 2015;115(11):1789-97. PubMed PMID: 26048533.
    * Article titles in AMA citation format should be in sentence-case
    TY - JOUR T1 - Are the Recommended Dietary Allowances for Vitamins Appropriate for Elderly People? AU - Bolzetta,Francesco, AU - Veronese,Nicola, AU - De Rui,Marina, AU - Berton,Linda, AU - Toffanello,Elena Debora, AU - Carraro,Sara, AU - Miotto,Fabrizia, AU - Inelmen,Eminè Meral, AU - Donini,Lorenzo Maria, AU - Manzato,Enzo, AU - Coin,Alessandra, AU - Perissinotto,Egle, AU - Sergi,Giuseppe, Y1 - 2015/06/02/ PY - 2014/07/27/received PY - 2015/04/10/accepted PY - 2015/6/7/entrez PY - 2015/6/7/pubmed PY - 2016/2/5/medline KW - Micronutrient KW - Older people KW - Recommended Dietary Allowances (RDA) KW - Vitamins SP - 1789 EP - 97 JF - Journal of the Academy of Nutrition and Dietetics JO - J Acad Nutr Diet VL - 115 IS - 11 N2 - BACKGROUND: An adequate vitamin intake is essential for a good nutritional status, especially in older women, who are more sensitive to nutritional deficiencies. The American, European and Italian Recommended Dietary Allowances (RDAs) derive mainly from studies on adults, and it is not clear whether they also apply to elderly people. Comparing the RDAs with the actual vitamin intake of a group of healthy older women could help to clarify the real needs of elderly people. OBJECTIVE: Our aim was to compare the American, European, and Italian RDAs with the actual vitamin intake of a group of healthy older women. DESIGN: This was a cross-sectional study. PARTICIPANTS: The study included 286 healthy women aged older than 65 years. MAIN OUTCOME MEASURES: For each micronutrient, the 50th percentile of the distribution of its intake was considered as the average requirement, and the corresponding calculated RDA for our sample was the average requirement×1.2, as recommended by the US Food and Nutrition Board. This calculated RDA was then compared with the American, European, and Italian RDAs. STATISTICAL ANALYSES PERFORMED: Student's t test or the Mann-Whitney test (after checking the normal distribution of the micronutrient) for continuous variables; the χ(2) test for categorical variables. RESULTS: The calculated RDA were 2,230 μg retinol equivalents for vitamin A, 2.8 μg for vitamin B-12, 0.9 mg for thiamin, 1.4 mg for riboflavin, 3.6 mg for pantothenic acid, 1.4 mg for vitamin B-6, 320 μg for folic acid, and 115 mg for vitamin C. CONCLUSIONS: Our findings suggest that the current RDAs are adequate for older women's intake of riboflavin, vitamin B-6, and folic acid, but should be raised for vitamin B-12 and for vitamin C. SN - 2212-2672 UR - https://www.unboundmedicine.com/medline/citation/26048533/Are_the_Recommended_Dietary_Allowances_for_Vitamins_Appropriate_for_Elderly_People L2 - https://linkinghub.elsevier.com/retrieve/pii/S2212-2672(15)00483-9 DB - PRIME DP - Unbound Medicine ER -