The results suggested that factors such as age, sex, BMI, hypertension, coronary heart disease, diabetes, hyperuricemia, dyslipidemia, smoking habits, DASH diet score, shift work, exposure to high temperature and dust, and ALT, AST and GGT levels were significantly correlated with the prevalence of NAFLD (P < 0.05) (Tables 1, 2, 3 and 4). Here, GPT is linked to metabolic syndrome.