GPT and type 2 diabetes mellitus: Our findings revealed that (1) during an average follow-up period of 2207.82 ± 1379.73 days, 262 participants (1.7%) acquired T2DM; (2) age, WC, ALT, HbA1c, FPG, the presence of fatty liver, current smoking status, and heavy alcohol intake were identified as separate risk variables, whereas HDL-C exhibited a shielding effect; (3) elevated HbA1c levels were correlated with an increased susceptibility to T2DM.