alexa Prevalence of nonalcoholic fatty liver disease and nonalcoholic steatohepatitis among a largely middle-aged population utilizing ultrasound and liver biopsy: a prospective study.
Diabetes & Endocrinology

Diabetes & Endocrinology

Journal of Diabetes & Metabolism

Author(s): Williams CD, Stengel J, Asike MI, Torres DM, Shaw J,

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Abstract BACKGROUND & AIMS: Prevalence of nonalcoholic fatty liver disease (NAFLD) has not been well established. The purpose of this study was to prospectively define the prevalence of both NAFLD and nonalcoholic steatohepatitis (NASH). METHODS: Outpatients 18 to 70 years old were recruited from Brooke Army Medical Center. All patients completed a baseline questionnaire and ultrasound. If fatty liver was identified, then laboratory data and a liver biopsy were obtained. RESULTS: Four hundred patients were enrolled. Three hundred and twenty-eight patients completed the questionnaire and ultrasound. Mean age (range, 28-70 years) was 54.6 years (7.35); 62.5\% Caucasian, 22\% Hispanic, and 11.3\% African American; 50.9\% female; mean body mass index (BMI) (calculated as kg/m(2)) was 29.8 (5.64); and diabetes and hypertension prevalence 16.5\% and 49.7\%, respectively. Prevalence of NAFLD was 46\%. NASH was confirmed in 40 patients (12.2\% of total cohort, 29.9\% of ultrasound positive patients). Hispanics had the highest prevalence of NAFLD (58.3\%), then Caucasians (44.4\%) and African Americans (35.1\%). NAFLD patients were more likely to be male (58.9\%), older (P = .004), hypertensive (P < .00005), and diabetic (P < .00005). They had a higher BMI (P < .0005), ate fast food more often (P = .049), and exercised less (P = 0.02) than their non-NAFLD counterparts. Hispanics had a higher prevalence of NASH compared with Caucasians (19.4\% vs 9.8\%; P = .03). Alanine aminotransferase, aspartate aminotransferase, BMI, insulin, Quantitative Insulin-Sensitivity Check Index, and cytokeratin-18 correlated with NASH. Among the 54 diabetic patients, NAFLD was found in 74\% and NASH in 22.2\%. CONCLUSION: Prevalence of NAFLD and NASH is higher than estimated previously. Hispanics and patients with diabetes are at greatest risk for both NAFLD and NASH. TRIAL REGISTRATION: ClinicalTrials.gov NCT01100398. Copyright © 2011 AGA Institute. Published by Elsevier Inc. All rights reserved. This article was published in Gastroenterology and referenced in Journal of Diabetes & Metabolism

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