AIM:To investigate whether erosive esophagitis is correlated with metabolic syndrome and its components,abnormal liver function,and lipoprotein profiles.METHODS:We conducted a cross-sectional,case control study of subjects who underwent upper endoscopy during a health examination at the Health Management and Evaluation Center of a tertiary medical care facility located in Southern Taiwan.Metabolic syndrome components,body mass index(BMI),liver function,dyslipidemia,and cardiovascular risk factors,as defined by the ratio of total cholesterol to high-density lipoprotein cholesterol(HDL-C),and the ratio of low-density lipoprotein cholesterol to HDL-C were compared betweenindividuals with and without erosive esophagitis.Risk factors for erosive esophagitis were evaluated by multivariate logistic regression.RESULTS:Erosive esophagitis was diagnosed in 507of 5015 subjects who were individually age and sex matched to 507 esophagitis-free control subjects.In patients with erosive esophagitis,BMI,waist circumference,blood pressure,fasting plasma glucose,triglyceride levels,aspartate aminotransferase,alanine aminotransferase,the ratio of total cholesterol to HDL-C,and the ratio of low-density lipoprotein cholesterol to HDL-C were significantly higher and HDL-C was significantly lower compared to patients without erosive esophagitis(all P<0.05).In a multivariate analysis,central obesity(OR=1.38;95%CI:1.0-1.86),hypertension(OR=1.35;95%CI:1.04-1.76),hypertriglyceridemia(OR=1.34;95%CI:1.02-1.76),cardiovascular risk factors as defined by a ratio of total cholesterol to HDL-C>5(OR=1.45;95%CI:1.06-1.97),and aspartate aminotransferase(OR=1.59;95%CI:1.08-2.34)were significantly associated with erosive esophagitis.CONCLUSION:Metabolic syndrome,impaired liver function,and a higher ratio of total cholesterol to HDL-C were associated with erosive esophagitis. AIM: To investigate whether erosive esophagitis is correlated with metabolic syndrome and its components, abnormal liver function, and lipoprotein profiles. METHODS: We conducted a cross-sectional, case control study of subjects who underwent upper endoscopy during a health examination at the Health Management and Evaluation Center of a tertiary medical care facility located in Southern Taiwan. Metabolic syndrome components, body mass index (BMI), liver function, dyslipidemia, and cardiovascular risk factors, as defined by the ratio of total cholesterol to high-density lipoprotein cholesterol HDL-C), and the ratio of low-density lipoprotein cholesterol to HDL-C were compared between indiduals with and without erosive esophagitis .Risk factors for erosive esophagitis were evaluated by multivariate logistic regression .RESULTS: Erosive esophagitis was diagnosed in 507of 5015 subjects who were individually age and sex matched to 507 esophagitis-free control subjects. In patients with erosive esophagitis, B MI, waist circumference, blood pressure, fasting plasma glucose, triglyceride levels, aspartate aminotransferase, alanine aminotransferase, the ratio of total cholesterol to HDL-C, and the ratio of low-density lipoprotein cholesterol to HDL- C was significantly lower compared to patients without erosive esophagitis (all P <0.05) .In a multivariate analysis, central obesity (OR = 1.38; 95% CI: 1.0-1.86) 1.76), hypertriglyceridemia (OR = 1.34; 95% CI: 1.02-1.76), cardiovascular risk factors as defined by a ratio of total cholesterol to HDL-C> 5 aspartate aminotransferase (OR = 1.59; 95% CI: 1.08-2.34) were significantly associated with erosive esophagitis. CONCLUSION: Metabolic syndrome, impaired liver function, and a higher ratio of total cholesterol to HDL-C were associated with erosive esophagitis.