In model 2, after adjusting for smoking and alcohol history, the results have shown that AST (OR:1.05, 95%CI:1.00–1.11, p = 0.043) and ALP (OR:1.02, 95%CI:1.00–1.04, p = 0.014) have maintained significant association with NAFL, whereas, former alcohol consumers (OR:0.00, 95%CI:0.00–0.77, p = 0.039), current alcohol consumers (OR:0.00, 95%CI:0.00–0.75, p = 0.044), glucose (OR:1.06, 95%CI:1.00–1.12, p = 0.035), AST (OR:1.21, 95%CI:1.02–1.43, p = 0.029), HDL (OR:0.80, 95%CI:0.66–0.97, p = 0.027), and BMP8B (OR:1.04, 95%CI:1.01–1.07, p = 0.001) were predictors of NASH. The gene discussed is BMP8B; the disease is metabolic dysfunction-associated steatohepatitis.