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Efficacy of a 2-Month Very Low-Calorie Ketogenic Diet (VLCKD) Compared to a Standard Low-Calorie Diet in Reducing Visceral and Liver Fat Accumulation in Patients With Obesity

Authors
  • Cunha, Guilherme Moura1
  • Guzman, German2
  • Correa De Mello, Livia Lugarinho3
  • Trein, Barbara3
  • Spina, Luciana4
  • Bussade, Isabela5
  • Marques Prata, Juliana6
  • Sajoux, Ignacio2
  • Countinho, Walmir3
  • 1 Department of Radiology, University of California, San Diego, La Jolla, CA , (United States)
  • 2 Pronokal Group, Barcelona , (Spain)
  • 3 Instituto Estadual de Diabetes e Endocrinologia Luiz Capriglione, Rio de Janeiro , (Brazil)
  • 4 Rio de Janeiro, Rio de Janeiro , (Brazil)
  • 5 Clínica Isabela Bussade, Rio de Janeiro , (Brazil)
  • 6 Clinical Diagnostic Imaging (CDPI), Rio de Janeiro , (Brazil)
Type
Published Article
Journal
Frontiers in Endocrinology
Publisher
Frontiers Media SA
Publication Date
Sep 14, 2020
Volume
11
Identifiers
DOI: 10.3389/fendo.2020.00607
PMID: 33042004
PMCID: PMC7521128
Source
PubMed Central
Keywords
License
Unknown

Abstract

Background: Currently the treatment of non-alcoholic fatty liver disease (NAFLD) is based on weight loss through lifestyle changes, such as exercise combined with calorie-restricted dieting. Objectives: To assess the effects of a commercially available weight loss program based on a very low-calorie ketogenic diet (VLCKD) on visceral adipose tissue (VAT) and liver fat content compared to a standard low-calorie (LC) diet. As a secondary aim, we evaluated the effect on liver stiffness measurements. Methods: Open, randomized controlled, prospective pilot study. Patients were randomized and treated either with an LC or a VLCKD and received orientation and encouragement to physical activity equally for both groups. VAT, liver fat fraction, and liver stiffness were measured at baseline and after 2 months of treatment using magnetic resonance imaging. Paired t -tests were used for comparison of continuous variables between visits and unpaired test between groups. Categorical variables were compared using the χ2-test. Pearson correlation was used to assess the association between VAT, anthropometric measures, and hepatic fat fraction. A significance level of the results was established at p < 0.05. Results: Thirty-nine patients (20 with VLCKD and 19 with LC) were evaluated at baseline and 2 months of intervention. Relative weight loss at 2 months was −9.59 ± 2.87% in the VLCKD group and −1.87 ± 2.4% in the LC group ( p < 0.001). Mean reductions in VAT were −32.0 cm2 for VLCKD group and −12.58 cm2 for LC group ( p < 0.05). Reductions in liver fat fraction were significantly more pronounced in the VLCKD group than in the LC group (4.77 vs. 0.79%; p < 0.005). Conclusion: Patients undergoing a VLCKD achieved superior weight loss, with significant VAT and liver fat fraction reductions when compared to the standard LC diet. The weight loss and rapid mobilization of liver fat demonstrated with VLCKD could serve as an effective alternative for the treatment of NAFLD. Clinical Trial Registration: ClinicalTrials.gov , identifier: NCT04322110.

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