When liver diseases were additionally adjusted, the effects of ALT diminished, but remained significant [2.85 (95% CI 2.45–3.31) for 40–80 U/L, 3.80 (3.04–4.76) for 80–120 U/L, and 3.89 (3.08–4.91) for > 120 U/L]. Here, GPT is linked to liver disorder.