GPT and diabetes mellitus: Using multiple cox regression models, we found that NAFLD, ALT, AST, GGT and ALP were significantly independent risk factors for incident diabetes in both sexes; adjusted hazard ratio (HR) and 95% confidence interval (CI) was 2.08 (1.93–2.23), 1.27 (1.16–1.38), 1.23 (1.13–1.34), 1.58 (1.46–1.72) and 1.37 (1.17–1.60), respectively, in men and was 2.65 (2.43–2.88), 1.56 (1.37–1.77), 1.18 (1.04–1.34), 1.48 (1.32–1.65) and 1.44 (1.25–1.66), respectively, in women.