The primary outcome measures will consist of the frequency of Omentin-1 gene polymorphism genotypes and the changes in serum levels of glycemic indices (FBS, serum insulin, and Homeostatic Model Assessment of Insulin Resistance (HOMA-IR)), lipid profiles (LDL-C, HDL-C, TG, and TC), omentin, and 25(OH)D from the baseline to 12 weeks. Here, INS is linked to Insulin resistance.