INS and type 2 diabetes mellitus: The 2 h INS level was the highest in the Prediabetic group; SBP, 2hPG, and IAF area were the highest in the new-onset T2DM group; WHR, FBG, HOMA-IR and 8-iso-PGF2α were the highest in the non-new-onset T2DM group (Table 1).