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Comparison of prevalence of fatty liver disease according to the different nomenclatures of NAFLD, MAFLD, and MASLD in a large Iranian Population-based study
Open accessAbstract
The terminology and diagnostic criteria for fatty liver disease have undergone recent evolution, from non-alcoholic fatty liver disease (NAFLD) to metabolic dysfunction-associated fatty liver disease (MAFLD), and more recently to metabolic dysfunction-associated steatotic liver disease (MASLD). We aimed to compare the estimated prevalence of FLD with that of NAFLD, MAFLD, and MASLD using different definitions. Data were analyzed from 10,520 participants in the first phase of the Guilan Persian Cohort Study, part of the nationwide PERSIAN Cohort. Participants were classified based on NAFLD, MAFLD, and MASLD. Of 10,520 participants, 5,025 (47.8%) had a fatty liver index (FLI) ≥ 60 and were diagnosed with SLD. The prevalence of MASLD, MAFLD, and NAFLD was 33.7%, 47.6%, and 33.7%, respectively, while 4.5% (n = 471) were classified as metabolic dysfunction-associated alcohol-related liver disease (MetALD). Among those with NAFLD, 99.7% also met MAFLD criteria, and all met MASLD criteria. MAFLD was associated with the highest adjusted odds of elevated FIB-4 (OR: 1.27; 95% CI: 1.24-1.30) and hepatic steatosis index (OR: 2.01; 95% CI: 1.82-2.21). NAFLD and MASLD had a similar, lower prevalence compared to MAFLD. MetALD was not included under MASLD but was encompassed by MAFLD.
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The vast majority of patients with confirmed NAFLD meet the criteria for MASLD, so historical NAFLD/NASH data remain relevant overall.
“According to recent reviews, the vast majority of patients with confirmed NAFLD meet the criteria for MASLD [34,35,36], so historical data remain relevant overall.”
From The HepG2 Cell Line as a Model for Studying Metabolic Dysfunction-Associated Steatotic Liver Disease (2026) · cites this paper as [36]
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Metadata
- Authors
- Isfahani, M. M., Sepanlou, S. G., Joukar, F., Mansour-Ghanaei, F., & Taheri, E.
- Affiliations
- Digestive Disease Research Institute (IR)
- Tehran University of Medical Sciences (IR)
- Guilan University of Medical Sciences (IR)
- Corresponding author
- Taheri, Ehsaneh
- Venue
- Scientific Reports
- Published
- 2025-12-08
- Volume
- 16
- Issue
- 1
- Pages
- 742-742
- ISSN
- 2045-2322 (ISSN-L)
- PMC
- PMC12780078
- OpenAlex
- W4417106575
- Cited by
- 3
- References
- 30
- Citations by year
- 2026: 3
- FWCI
- 2.08
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Licence
- Locations
- Scientific Reports (publishedVersion, cc-by-nc-nd)
- PubMed (publishedVersion)
- PubMed Central (publishedVersion, cc-by-nc-nd)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- Topics
- Health Sciences › Medicine › Hepatology › Liver Disease Diagnosis and Treatment
- Health Sciences › Medicine › Pathology and Forensic Medicine › Alcohol Consumption and Health Effects
- Health Sciences › Medicine › Hepatology › Liver Diseases and Immunity
- Keywords
- hepatic steatosis, non-alcoholic fatty liver disease, disease nomenclature, prevalence, fatty liver index, FIB-4, hepatic steatosis index, Iranian population
- MeSH terms
- Adult, Aged, Fatty Liver, Female, Humans, Iran, Male, Middle Aged, Cohort Studies, Prevalence, Non-alcoholic Fatty Liver Disease
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