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The impact of dietary interventions on liver health biomarkers in individuals with metabolic dysfunction-associated steatotic liver disease (MASLD): a systematic literature review and meta-analysis of randomized controlled trials

Stern UM, Wagenpfeil G, Weber SN, Alqahtani SA, Michel M, Schattenberg JM

European journal of nutrition, 2026

9 participants · 6 citations

Abstract

PURPOSE: Metabolic dysfunction-associated steatotic liver disease (MASLD) and its subtype, metabolic dysfunction-associated alcohol-related liver disease (MetALD), represent the most prevalent chronic liver diseases worldwide, closely linked to unhealthy dietary patterns. Lifestyle modification is considered first-line treatment, yet the comparative effectiveness of different dietary approaches remains unclear. This systematic review and meta-analysis aimed to evaluate the impact of dietary interventions on liver health biomarkers in individuals with MASLD and MetALD. METHODS: A systematic database search was conducted for randomised controlled trials (RCTs, 2018–2024). Eligible trials assessed dietary interventions in MASLD or MetALD and reported changes in alanine aminotransferase (ALT), liver stiffness, MRI-proton density fat fraction (MRI-PDFF), and controlled attenuation parameter. Data were synthesized using weighted mean differences with fixed or random effects models. RESULTS: Sixty-eight full-text articles were included in the systematic review, of which 24 met the criteria for the meta-analysis. Since no eligible studies were identified in individuals with MetALD, the findings apply solely to people with MASLD. In studies on fasting interventions ALT (MD = − 12.47 IU/L; 95% CI − 22.03,− 2.92; p = 0.01; n = 6) and liver stiffness (MD = − 0.24 kPa; 95% CI − 0.46, − 0.03; p = 0.03; n = 4) were reduced compared to controls. The Mediterranean diet (MedDiet) resulted in…

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Evidence Hub reads this as a meta-analysis, done in people. Its evidence level is 1 of 5 (Highest · pooled evidence). Pooled evidence from several studies sits at the top of the evidence pyramid. Reported size: 9 participants or records.

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