Vitamin D Supplementation in Adults with Vitamin D Deficiency and Its Effect on Metabolic Syndrome - A Randomized Controlled Study.

Background: Inverse relationship between metabolic syndrome (MetS) and 25-hydroxyvitamin D (25(OH) D) levels is controversial. Hypovitaminosis-D has long been suspected as a risk factor for glucose intolerance.

Aim: A randomized double blind placebo controlled study to evaluate effects of vitamin D supplementation on insulin resistance in subjects with hypovitaminosis-D and MetS.