Concentrations of Serum Vitamin D and the Metabolic Syndrome Among U.S. Adults

Accumulating research suggests that circulating concentrations of vitamin D may be inversely related to the prevalence of diabetes (1,2,3,4), to the concentration of glucose (4,5,6,7,8), and to insulin resistance (4,5,8,9). In addition, vitamin D deficiency may be a risk factor for the metabolic syndrome (8,10), a highly prevalent condition among U.S. adults (11). Much remains to be learned, however, about the relationship between vitamin D status and metabolic syndrome. Because this topic has received scant attention and the available information was derived from a small clinically based sample, we sought to examine the nature and strength of the association between serum concentrations of vitamin D and the…