Average concentration of 25 OH Vitamin D (ng / ml) in belly fat patients was 29.49±8.22, lower than in non-belly fat patients at 33.98±8.70 with p=0.014; Quicki in patients with and without belly fat were 0.31±0.03 and 0.33±0.04 respectively, with p=0.001; concentration of 25 OH Vitamin D in patients with insulin resistance was 29.16±8.12 and without insulin resistance was 32.85±8.76 with p=0.025; waist circumference (cm) in groups of patients with and without insulin resistance were 90.52±6.21 and 86.18±6.30 respectively, with p=0.001.