GPT and fatty liver disease: After adjusting for confounding factors (age, gender, hypertension, total cholesterol, triglycerides, glucose, high-density lipoprotein, low-density lipoprotein, uric acid, homocysteine, creatinine, aspartate aminotransferase and alanine transaminase), overweight (OR = 3.55, 95% CI: 2.49–5.06, P = 2.79 × 10−12), obesity (OR = 7.59, 95% CI: 4.91–11.71, P = 6.56 × 10−20) were significantly related to fatty liver risk.