Characterization of patients with both alcoholic and nonalcoholic fatty liver disease in a large United States cohort

George Khoudari, Amandeep Singh, Mazen Noureddin, Danielle Fritze, Rocio Lopez, Imad Asaad, Eric Lawitz, Fred Poordad, Kris V. Kowdley, Naim Alkhouri

Research output: Contribution to journalArticle

1 Scopus citations

Abstract

BACKGROUND Nonalcoholic fatty liver disease (NAFLD) is the hepatic manifestation of the metabolic syndrome (MetS) and is characterized by steatosis in the absence of significant alcohol consumption. However, MetS and significant alcohol intake coexist in certain individuals which may lead to the development of BAFLD. AIM To assess the clinical characteristics of patients with both alcoholic and NAFLD (BAFLD) in a large cohort in the United States. METHODS Adults from the National Health and Nutrition Examination Survey between 2003-2014 were included. NAFLD was diagnosed based on elevated alanine aminotransferase (ALT) and being overweight or obese in the absence of other liver diseases. BAFLD patients met the criteria for NAFLD but also had either MetS or type 2 diabetes and consumed excessive amounts of alcohol. Univariable and multivariable analysis were performed to assess differences between NAFLD and BAFLD and to compare severity based on a validated fibrosis score (FIB4 index). RESULTS The prevalence of NAFLD was at 25.9% (95%CI; 25.1-26.8) and that of BAFLD was 0.84% (0.67, 1.02) which corresponds to an estimated 1.24 million Americans affected by BAFLD. Compared to NAFLD, patients with BAFLD were more likely to be male, smokers, have higher ALT, aspartate aminotransferase, triglycerides, and lower platelets; P < 0.01 for all. More importantly, after adjusting for MetS components, BAFLD patients were significantly more likely to have advanced fibrosis [adjusted OR (95%CI) based on FIB4 index > 2.67 was 3.2 (1.4, 7.0), P = 0.004]. CONCLUSION A significant percentage of the American general population is afflicted by BAFLD and these patients tend to have more advanced liver fibrosis.

Original languageEnglish (US)
Pages (from-to)710-718
Number of pages9
JournalWorld Journal of Hepatology
Volume11
Issue number10
DOIs
StatePublished - Jan 1 2019

Keywords

  • Alcoholic liver disease
  • Fatty liver disease
  • Non-alcoholic fatty liver disease

ASJC Scopus subject areas

  • Hepatology

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