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Ann Epidemiol. 2013 Jul;23(7):409-14. doi: 10.1016/j.annepidem.2013.05.011.

The effect of body mass index on optimal vitamin D status in U.S. adults: the National Health and Nutrition Examination Survey 2001-2006.

Author information

1
Department of Health Sciences, Lehman College, City University of New York, Bronx, NY 10468, USA. Lalitha.Samuel@lehman.cuny.edu

Abstract

OBJECTIVES:

To investigate the relationship between body mass index (BMI) and optimal vitamin D status in U.S. adults.

METHODS:

Data on 12,927 adults 18 years and older participating in National Health and Nutrition Examination Surveys 2001-2006 were used. Serum levels of 25-hydroxy vitamin D 30 ng/mL or greater was used as a measure of vitamin D sufficiency. Log-binomial regression was used to estimate the strength of the association between BMI categories and the prevalence of vitamin D sufficiency before and after adjusting for selected characteristics.

RESULTS:

After adjustment, overweight and obese individuals were 24% and 55%, respectively, less likely to have a 25-hydroxy vitamin D level of 30 ng/mL or greater compared with their normal-weight counterparts.

CONCLUSIONS:

Our findings call attention to the importance of identifying individuals at risk for vitamin D insufficiency and its potential adverse health outcomes because the latter may increase health disparities in the U.S. population. If vitamin D insufficiency is implicated for chronic diseases such as cardiovascular diseases and diabetes, a vitamin D supplementation regimen would need to be readdressed, especially for segments of the U.S. population with greater BMIs.

PMID:
23790345
DOI:
10.1016/j.annepidem.2013.05.011
[Indexed for MEDLINE]
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