Racial Difference in Response to Vitamin D Supplementation.

Unlabelled: This manuscript is the result of work supported by the use of resources and facilities at the Louis Stokes Cleveland Department of Veterans Affairs Medical Center, specifically, the Geriatric Research Education and Clinical Center (GRECC).

Background: Deficiency in 25-hydroxyvitamin D (25[OH]D) is common, especially in the elderly and African Americans (AA). While 25(OH) D deficiency is associated with multiple negative health outcomes, current recommendations for supplementation of this deficiency may be insufficient.