INS and metabolic syndrome: We found that after controlling for MetS, gender, and age, leptin was associated with glucose (β = 0.278, p = 0.002), waist circumference (β = 0.592, p = 0.0001), body mass index (BMI) (β = 0.570, p = 0.0001), body fat percentage (β = 0.603, p = 0.0001), visceral fat level (β = 0.344, p = 0.003), total fat fold (β = 0.532, p = 0.0001), total cholesterol (β = 0.171, p = 0.045), insulin (β = 0.352, p = 0.0001), and homeostasis model assessment of insulin resistance (HOMA-IR) (β = 0.334, p = 0.0001).