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Many middle-aged and older Americans not getting adequate nutrition
Date:2/28/2009

ad significantly lower dietary intakes of calcium than Caucasians and Hispanics.

The study also evaluated differences between multivitamins and high-dose supplements. While high-dose calcium was associated with meeting RDA/AIs for all ethnic groups, some high-dose supplements could also cause users to exceed their Tolerable Upper Intake Levels (ULs). For calcium, 15.0% of high-dose users exceeded the UL compared to 1.9% of multivitamin users and 2.1% of non-users. For magnesium, 35.3% of high-dose supplement users exceeded the UL compared to 0% of both multivitamin users and non-users. In addition, 6.6% high-dose vitamin C users exceeded the UL compared to 0% of both multivitamin users and non-users.

The study also found that potassium intake was very much below the RDA whether supplements were taken or not. This could point to a need to reformulate supplements to deliver higher potassium doses.

Writing in the article, Pamela J. Schreiner, MS, PhD, Professor and Director of Graduate Studies, Division of Epidemiology and Community Health, University of Minnesota, states, "The present study indicates a clear association between meeting RDA/AIs and supplement use for calcium, magnesium and vitamin C. However, even with the assistance of dietary supplements many middle-aged and older Americans are not getting adequate nutrition, and there was no association between supplement use and meeting the AI for potassium. In addition, those taking high-dose vitamin supplements were more likely to exceed the UL for that nutrient. Future studies should explore dietary supplementation along with other methods to improve nutrition in middle-aged and older Americans."


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Contact: Lynelle Korte
jadamedia@elsevier.com
314-453-4841
Elsevier Health Sciences
Source:Eurekalert

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