Document Detail

Is the recommended daily allowance for vitamin D too low for the homebound elderly?
MedLine Citation:
PMID:  1991945     Owner:  NLM     Status:  MEDLINE    
A population of sunlight-deprived elderly was studied to determine the daily intake of vitamin D and whether dietary intake was sufficient to maintain a normal vitamin D status. Twenty-two subjects over 65 years old with serum creatinine less than 180 mumols/L and confined indoors for more than 6 months were chosen from the community and a nursing home in Southeast Baltimore. Three-day food records were obtained along with serum levels of 25-hydroxyvitamin D (25-OHD), 1,25-dihydroxyvitamin D (1,25-(OH)2 D), and intact parathyroid hormone (PTH). The mean daily vitamin D intake was over twofold greater than the adult Recommended Daily Allowance (RDA) of 200 IU. The mean 25-OHD level was 40 nmol/L (normal 25-138 nmol/L) with seven patients less than 25 nmol/L. Of these participants with 25-OHD values less than 25 nmol/L, the mean vitamin D intake was 467 IU (range 36-1096 IU). We conclude that the current RDA seems inadequate for many older individuals who do not get sun exposure. This particular population of elderly is at risk to develop vitamin D deficiency and the associated complications.
F M Gloth; J D Tobin; S S Sherman; B W Hollis
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Journal of the American Geriatrics Society     Volume:  39     ISSN:  0002-8614     ISO Abbreviation:  J Am Geriatr Soc     Publication Date:  1991 Feb 
Date Detail:
Created Date:  1991-03-13     Completed Date:  1991-03-13     Revised Date:  2008-03-10    
Medline Journal Info:
Nlm Unique ID:  7503062     Medline TA:  J Am Geriatr Soc     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  137-41     Citation Subset:  IM    
Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland.
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MeSH Terms
Aged, 80 and over
Calcium, Dietary / administration & dosage
Energy Intake
Vitamin D / administration & dosage*
Vitamin D Deficiency / blood,  etiology*
Grant Support
5 T32 AG00120-03/AG/NIA NIH HHS
Reg. No./Substance:
0/Calcium, Dietary; 1406-16-2/Vitamin D

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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