After adjustments for age and sex where appropriate, participants with NAFLD tended to be men, older, of lower education level, less likely to be employed as managers (P < 0.0001), and current or ex-smokers, who drank sometimes, had lower daily energy intake and lower intake of vegetable pattern (P < 0.0001), had a higher prevalence of type 2 diabetes, hypertension, hyperlipidaemia, and family history of diabetes, and higher BMI and alanine aminotransferase level (P < 0.0001). This evidence concerns the gene GPT and type 2 diabetes mellitus.