Abstract
Background & AimsWe compared the effects of a 12-week intermittent calorie restriction (ICR) and standard of care (SOC) diet on liver fat content (LFC) in metabolic dysfunction-associated steatotic liver disease (MASLD) patients. MethodsThis randomized controlled trial included patients with MRI-proton density fat fraction (PDFF) ≥8%. Patients were randomly assigned to the ICR (5:2 diet) or SOC (80% of the recommended calorie intake) groups and stratified according to the body mass index (≥ or <25 kg/m2). The primary outcome was the proportion of patients who achieved a relative LFC reduction as measured by MRI-PDFF ≥30%. ResultsSeventy-two participants underwent randomization (36 patients with and 36 without obesity), and 63 (34 patients with and 29 without obesity) completed the trial. At week 12, a higher proportion of patients in the ICR arm achieved a relative LFC reduction of ≥30% compared to the SOC arm (72.2% vs. 44.4%; P=0.033), which was more prominent in the group with obesity (61.1% vs. 27.7%; P=0.033) than in the group without obesity (83.3% vs. 61.1%; P=0.352). The relative weight reduction was insignificant between the ICR and SOC arms (-5.3% vs. -4.2%; P=0.273); however, it was higher in the ICR arm compared to the SOC arm (-5.5% vs. -2.9%; P=0.039) in the group with obesity. Changes in fibrosis, muscle and fat mass, and liver enzyme levels were similar between the two groups (all P>0.05). ConclusionsThe ICR diet reduced LFC more effectively than SOC in patients with MASLD, particularly in patients with obesity. Additional studies are warranted in larger and more diverse cohorts.
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