The Metabolic and Hepatic Impact of Two Personalized Dietary Strategies in Subjects with Obesity and Nonalcoholic Fatty Liver Disease: The Fatty Liver in Obesity (FLiO) Randomized Controlled Trial

The prevalence of nonalcoholic fatty liver disease (NAFLD) is increasing worldwide. NAFLD management is mainly focused on weight loss, but the optimal characteristics of the diet demand further investigation. This study aims to evaluate the effects of two personalized energy-restricted diets on the...

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Bibliographic Details
Authors: Marin-Alejandre, Bertha Araceli, Abete, Itziar, Cantero, Irene, Monreal, J Ignacio, Elorz, Mariana, Herrero, Jose Ignacio, Benito-Boillos, Alberto, Quiroga, Jorge, Martinez-Echeverria, Ana, Uriz-Otano, Juan Isidro, Huarte-Muniesa, Maria Pilar, Tur, Josep A, Alfredo Martinez, J, Angeles Zulet, M
Format: article
Publication Date:2019
Country:España
Institution:Instituto de Salud Carlos III (ISCIII)
Repository:Repisalud
Language:English
OAI Identifier:oai:repisalud.isciii.es:20.500.12105/22761
Online Access:https://hdl.handle.net/20.500.12105/22761
Access Level:Open access
Keyword:Obesity
NAFLD
Dietary intervention
AHA
FLiO
Fatty liver
Mediterranean Diet
Pérdida de Peso
Dieta Mediterránea
Ejercicio Físico
Femenino
Enfermedad del Hígado Graso no Alcohólico
Hígado
Masculino
Restricción Calórica
Humanos
Persona de Mediana Edad
Obesidad
Anciano
Anciano de 80 o más Años
Adulto
Description
Summary:The prevalence of nonalcoholic fatty liver disease (NAFLD) is increasing worldwide. NAFLD management is mainly focused on weight loss, but the optimal characteristics of the diet demand further investigation. This study aims to evaluate the effects of two personalized energy-restricted diets on the liver status in overweight or obese subjects with NAFLD after a 6 months follow-up. Ninety-eight individuals from the Fatty Liver in Obesity (FLiO) study were randomized into two groups and followed different energy-restricted diets. Subjects were evaluated at baseline and after 6 months. Diet, anthropometry, body composition, and biochemical parameters were evaluated. Liver assessment included ultrasonography, Magnetic Resonance Imaging, elastography, and determination of transaminases. Both dietary groups significantly improved their metabolic and hepatic markers after the intervention, with no significant differences between them. Multivariate regression models evidenced a relationship between weight loss, adherence to the Mediterranean Diet (MedDiet), and a decrease in liver fat content, predicting up to 40.9% of its variability after 6 months. Moreover, the antioxidant capacity of the diet was inversely associated with liver fat content. Participants in the group with a higher adherence to the MedDiet showed a greater reduction in body weight, total fat mass, and hepatic fat. These results support the benefit of energy-restricted diets, high adherence to the MedDiet, and high antioxidant capacity of the diet for the management of NAFLD in individuals with overweight or obesity.

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