Risk factors for NAFLD in PCOS included BMI > 26.8 kg/m2, AC > 88.3 cm, triglyceride > 1.57 mmol/L, TC > 4.67 mmol/L, LDL-C > 3.31 mmol/L, glucose > 4.83 mmol/L, insulin > 111.35 pmol/L, FT > 7.6 pg/mL and SHBG < 25 nmol/L (β = 1.411–2.667, P < 0.005). This evidence concerns the gene SHBG and polycystic ovary syndrome.