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dc.contributor.authorTseng, Marilyn
dc.contributor.authorGiri, Veda
dc.contributor.authorBruner, Deborah W
dc.contributor.authorGiovannucci, Edward L.
dc.date.accessioned2011-05-07T03:03:57Z
dc.date.issued2009
dc.identifier.citationTseng, Marilyn, Veda Giri, Deborah W. Bruner, and Edward Giovannucci. 2009. Prevalence and correlates of vitamin D status in African American men. BMC Public Health 9: 191.en_US
dc.identifier.issn1471-2458en_US
dc.identifier.urihttp://nrs.harvard.edu/urn-3:HUL.InstRepos:4882976
dc.description.abstractBackground: Few studies have examined vitamin D insufficiency in African American men although they are at very high risk. We examined the prevalence and correlates of vitamin D insufficiency among African American men in Philadelphia. Methods: Participants in this cross-sectional analysis were 194 African American men in the Philadelphia region who were enrolled in a risk assessment program for prostate cancer from 10/96–10/07. All participants completed diet and health history questionnaires and provided plasma samples, which were assessed for 25-hydroxyvitamin D (25(OH)D) concentrations. We used linear regression models to examine associations with 25(OH)D concentrations and logistic regression to estimate odds ratios (OR) for having 25(OH)D ≥ 15 ng/mL. Results: Mean 25(OH)D was 13.7 ng/mL, and 61% of men were classified as having vitamin D insufficiency (25(OH)D <15 ng/mL). Even among men with vitamin D intake ≥ 400 IU/day, 55% had 25(OH)D concentrations <15 ng/mL. In multivariate models, 25(OH)D concentrations were significantly associated with supplemental vitamin D intake (OR 4.3, 95% confidence interval (CI) 1.5, 12.4) for >400 vs. 0 IU/day), milk consumption (OR 5.9, 95% CI 2.2, 16.0 for ≥ 3.5 vs. <1 time per week), and blood collection in the summer. Additionally, 25(OH)D concentrations increased with more recreational physical activity (OR 1.3, 95% CI 1.1, 1.6 per hour). A significant inverse association of body mass index with 25(OH)D concentrations in bivariate analyses was attenuated with adjustment for season of blood collection. Conclusion: The problem of low vitamin D status in African American men may be more severe than previously reported. Future efforts to increase vitamin D recommendations and intake, such as through supplementation, are warranted to improve vitamin D status in this particularly vulnerable population.en_US
dc.language.isoen_USen_US
dc.publisherBioMed Centralen_US
dc.relation.isversionofdoi:10.1186/1471-2458-9-191en_US
dc.relation.hasversionhttp://www.ncbi.nlm.nih.gov/pmc/articles/PMC2708155/pdf/en_US
dash.licenseLAA
dc.titlePrevalence and correlates of vitamin D status in African American menen_US
dc.typeJournal Articleen_US
dc.description.versionVersion of Recorden_US
dc.relation.journalBMC Public Healthen_US
dash.depositing.authorGiovannucci, Edward L.
dc.date.available2011-05-07T03:03:57Z
dash.affiliation.otherHMS^Medicine-Brigham and Women's Hospitalen_US
dash.affiliation.otherSPH^Nutritionen_US
dc.identifier.doi10.1186/1471-2458-9-191*
dash.contributor.affiliatedGiovannucci, Edward


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