Vitamin D Deficiency is a Surrogate Marker for Visceral Fat Content, Metabolic Syndrome, Type 2 Diabetes, and Future Metabolic Complications

Worldwide, more than 1 billion people have vitamin D insufficiency [1,2] and an additional 750 million have vitamin D deficiency [3,4]. However, the reported prevalence of vitamin D deficiency varies from 10% to 70% in different countries [46]. Because vitamin D deficiency is associated with multiple disorders, it has gained attention as a major public health problem [4]. However, it is key nutritional deficiency that is easily and costeffectively treated [6-8].