PD, prediabetes; T2DM, type 2 diabetes; SBP, systolic blood pressure; DBP, diastolic blood pressure; WC, waist circumference; BMI, body mass index; BF, body fat; FPG, fasting plasma glucose; HbA1c, glycated hemoglobin; SI, serum insulin; TC, total cholesterol, TG, triglycerides; HDL, high-density lipoprotein; LDL, low-density lipoprotein; a, b significantly different between the two groups for age, WC, FPG, HbA1c, SI, TG and HDL. This evidence concerns the gene INS and type 2 diabetes mellitus.