In the final model, adjusted for age, sex, BMI, PA, smoking status, SES, dietary intake of energy, dietary fat, and fiber, the OR (95% CI) of NAFLD were (OR = 2.82; 95% CI: 1.50–5.30, P for trend = 0.005), (OR = 2.82; 95% CI: 1.50–5.30, P for trend = 0.005), (OR = 2.86; 95% CI: 1.49–5.48, P for trend = 0.010) for the highest vs. lowest tertiles of BCAAs, AAAs, and SAAs, respectively. The gene discussed is PCSK1N; the disease is metabolic dysfunction-associated steatotic liver disease.