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Nutrients 2017, 9(7), 667; doi:10.3390/nu9070667

Fruit Fiber Consumption Specifically Improves Liver Health Status in Obese Subjects under Energy Restriction

1
Department of Nutrition, Food Science and Physiology, Faculty of Pharmacy and Nutrition, University of Navarra, 31008 Pamplona, Spain
2
Centre for Nutrition Research, Faculty of Pharmacy and Nutrition, University of Navarra, 31008 Pamplona, Spain
3
CIBERObn, Physiopathology of obesity and nutrition, Instituto de Salud Carlos III, 28029 Madrid, Spain
4
Navarra Institute for Health Research (IdiSNA), 31008 Pamplona, Spain
5
Clinical Chemistry Department, University Clinic of Navarra, University of Navarra, 31008 Pamplona, Spain
*
Author to whom correspondence should be addressed.
Received: 4 May 2017 / Revised: 19 June 2017 / Accepted: 22 June 2017 / Published: 28 June 2017
(This article belongs to the Special Issue Precision Nutrition and Metabolic Syndrome Management)
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Abstract

The prevalence of non-alcoholic-fatty-liver-disease (NAFLD) is associated with obesity, diabetes, and metabolic syndrome (MS). This study aimed to evaluate the influence of two energy-restricted diets on non-invasive markers and scores of liver damage in obese individuals with features of MS after six months of follow-up and to assess the role of fiber content in metabolic outcomes. Seventy obese individuals from the RESMENA (Reduction of Metabolic Syndrome in Navarra) study were evaluated at baseline and after six months of energy-restricted nutritional intervention (American Heart Association (AHA) and RESMENA dietary groups). Dietary records, anthropometrical data, body composition by dual energy X-ray absorptiometry (DXA), and routine laboratory measurements were analyzed by standardized methods. Regarding liver status, cytokeratin-18 fragments and several non-invasive scores of fatty liver were also assessed. The RESMENA strategy was a good and complementary alternative to AHA for the treatment of obesity-related comorbidities. Participants with higher insoluble fiber consumption (≥7.5 g/day) showed improvements in fatty liver index (FLI), hepatic steatosis index (HIS), and NAFLD liver fat score (NAFLD_LFS), while gamma-glutamyl transferase (GGT) and transaminases evidenced significant improvements as a result of fruit fiber consumption (≥8.8 g/day). Remarkably, a regression model evidenced a relationship between liver status and fiber from fruits. These results support the design of dietary patterns based on the consumption of insoluble fiber and fiber from fruits in the context of energy restriction for the management of obese patients suffering fatty liver disease. View Full-Text
Keywords: obesity; fatty liver disease; metabolic syndrome; insoluble fiber; fiber; AHA; RESMENA obesity; fatty liver disease; metabolic syndrome; insoluble fiber; fiber; AHA; RESMENA
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MDPI and ACS Style

Cantero, I.; Abete, I.; Monreal, J.I.; Martinez, J.A.; Zulet, M.A. Fruit Fiber Consumption Specifically Improves Liver Health Status in Obese Subjects under Energy Restriction. Nutrients 2017, 9, 667.

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