LEP and cholelithiasis: Positive correlations were observed between serum leptin and total cholesterol (95% confidence interval (CI) = 0.61–0.89, r = 0.725, p < 0.001), and between leptin and triglycerides (95% CI = 0.63–0.89, r = 0.782, p < 0.001) in the cholelithiasis group.