GPT and depressive disorder: BMI: Body mass index; HDRS: Hamilton Depression Rating Scale (17-item version); FBS: Fasting blood sugar; HbA1c: Glycated hemoglobin; LDL-c: low-density lipoprotein cholesterol; HDL-c: high-density lipoprotein cholesterol; AST: aspartate transaminase; ALT: alanine transaminase.