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Older adults who use vitamin/mineral supplements differ from nonusers in nutrient intake adequacy and dietary attitudes.
J Am Diet Assoc 2007; 107(8):1322-32JA

Abstract

OBJECTIVE

To measure nutrient intake adequacy of vitamin/mineral supplement users and nonusers aged 51 years and older, determine the efficacy of supplement practices in compensating for dietary deficits, and identify predictors of supplement use.

DESIGN

Analyses of two 24-hour recalls, demographic variables, and attitude questions collected during the Continuing Survey of Food Intakes by Individuals and Diet and Health Knowledge Survey in 1994 to 1996. Data were weighted to be representative of older Americans.

SUBJECTS

Four thousand three hundred eighty-four adults aged 51 years and older (1,777 daily supplement users, 428 infrequent users, and 2,179 nonusers) residing in households in the United States.

STATISTICAL ANALYSES

Usual nutrient intake distributions were estimated using the Iowa State University method. The Estimated Average Requirement (EAR) cutpoint method was applied to determine the proportion of older adults not meeting requirements before and after accounting for nutrient intake from supplements. Student t tests were used to assess differences between users and nonusers. Logistic regression was used to determine sociodemographic and attitudinal predictors of supplement use.

RESULTS

For one or more of the sex-age groups studied, a significantly smaller proportion of supplement users than nonusers had intakes from food alone below the EAR for vitamins A, B-6, and C; folate; zinc; and magnesium. Even so, less than 50% of both users and nonusers met the EAR for folate, vitamin E, and magnesium from food sources alone. Overall, supplements improved the nutrient intake of older adults. After accounting for the contribution of supplements, 80% or more of users met the EAR for vitamins A, B-6, B-12, C, and E; folate; iron; and zinc, but not magnesium. However, some supplement users, particularly men, exceeded Tolerable Upper Intake Levels for iron and zinc and a small percentage of women exceeded the Tolerable Upper Intake Level for vitamin A. Significant sociodemographic factors related to supplement use for older men were age group, metropolitan area, and educational status. Race, region, smoking status, and vegetarian status were significant factors for women. Attitude about the importance of following a healthful diet was a consistent predictor of supplement use for both men and women.

CONCLUSIONS

A large proportion of older adults do not consume sufficient amounts of many nutrients from foods alone. Supplements compensate to some extent, but only an estimated half of this population uses them daily. These widespread inadequacies should be considered when developing recommendations for supplement use for clients in this age group. Modifying dietary attitudes may result in a higher rate of supplement use in this at-risk population.

Authors+Show Affiliations

US Department of Agriculture, Agricultural Research Service, Food Surveys Research Group, Beltsville, MD 20705, USA. Rhonda.Sebastian@ars.usda.govNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

17659898

Citation

Sebastian, Rhonda S., et al. "Older Adults Who Use Vitamin/mineral Supplements Differ From Nonusers in Nutrient Intake Adequacy and Dietary Attitudes." Journal of the American Dietetic Association, vol. 107, no. 8, 2007, pp. 1322-32.
Sebastian RS, Cleveland LE, Goldman JD, et al. Older adults who use vitamin/mineral supplements differ from nonusers in nutrient intake adequacy and dietary attitudes. J Am Diet Assoc. 2007;107(8):1322-32.
Sebastian, R. S., Cleveland, L. E., Goldman, J. D., & Moshfegh, A. J. (2007). Older adults who use vitamin/mineral supplements differ from nonusers in nutrient intake adequacy and dietary attitudes. Journal of the American Dietetic Association, 107(8), pp. 1322-32.
Sebastian RS, et al. Older Adults Who Use Vitamin/mineral Supplements Differ From Nonusers in Nutrient Intake Adequacy and Dietary Attitudes. J Am Diet Assoc. 2007;107(8):1322-32. PubMed PMID: 17659898.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Older adults who use vitamin/mineral supplements differ from nonusers in nutrient intake adequacy and dietary attitudes. AU - Sebastian,Rhonda S, AU - Cleveland,Linda E, AU - Goldman,Joseph D, AU - Moshfegh,Alanna J, PY - 2006/08/01/received PY - 2007/7/31/pubmed PY - 2007/9/12/medline PY - 2007/7/31/entrez SP - 1322 EP - 32 JF - Journal of the American Dietetic Association JO - J Am Diet Assoc VL - 107 IS - 8 N2 - OBJECTIVE: To measure nutrient intake adequacy of vitamin/mineral supplement users and nonusers aged 51 years and older, determine the efficacy of supplement practices in compensating for dietary deficits, and identify predictors of supplement use. DESIGN: Analyses of two 24-hour recalls, demographic variables, and attitude questions collected during the Continuing Survey of Food Intakes by Individuals and Diet and Health Knowledge Survey in 1994 to 1996. Data were weighted to be representative of older Americans. SUBJECTS: Four thousand three hundred eighty-four adults aged 51 years and older (1,777 daily supplement users, 428 infrequent users, and 2,179 nonusers) residing in households in the United States. STATISTICAL ANALYSES: Usual nutrient intake distributions were estimated using the Iowa State University method. The Estimated Average Requirement (EAR) cutpoint method was applied to determine the proportion of older adults not meeting requirements before and after accounting for nutrient intake from supplements. Student t tests were used to assess differences between users and nonusers. Logistic regression was used to determine sociodemographic and attitudinal predictors of supplement use. RESULTS: For one or more of the sex-age groups studied, a significantly smaller proportion of supplement users than nonusers had intakes from food alone below the EAR for vitamins A, B-6, and C; folate; zinc; and magnesium. Even so, less than 50% of both users and nonusers met the EAR for folate, vitamin E, and magnesium from food sources alone. Overall, supplements improved the nutrient intake of older adults. After accounting for the contribution of supplements, 80% or more of users met the EAR for vitamins A, B-6, B-12, C, and E; folate; iron; and zinc, but not magnesium. However, some supplement users, particularly men, exceeded Tolerable Upper Intake Levels for iron and zinc and a small percentage of women exceeded the Tolerable Upper Intake Level for vitamin A. Significant sociodemographic factors related to supplement use for older men were age group, metropolitan area, and educational status. Race, region, smoking status, and vegetarian status were significant factors for women. Attitude about the importance of following a healthful diet was a consistent predictor of supplement use for both men and women. CONCLUSIONS: A large proportion of older adults do not consume sufficient amounts of many nutrients from foods alone. Supplements compensate to some extent, but only an estimated half of this population uses them daily. These widespread inadequacies should be considered when developing recommendations for supplement use for clients in this age group. Modifying dietary attitudes may result in a higher rate of supplement use in this at-risk population. SN - 0002-8223 UR - https://www.unboundmedicine.com/medline/citation/17659898/Older_adults_who_use_vitamin/mineral_supplements_differ_from_nonusers_in_nutrient_intake_adequacy_and_dietary_attitudes_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0002-8223(07)00733-X DB - PRIME DP - Unbound Medicine ER -