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      Scale offers the possibility of identifying adherence to lifestyle interventions in patients with non-alcoholic fatty liver disease

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          Abstract

          Nonalcoholic fatty liver disease (NAFLD) is the most common chronic liver disorder, and dietary and lifestyle interventions remain the mainstays of NAFLD therapy. Zeng et al established a prediction system to evaluate adherence to lifestyle interventions in patients with NAFLD and choose optimal management. Here, we discuss the application scenarios of the scale and the areas warranting further attention, aiming to provide a possible reference for clinical recommendations.

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          Non-alcoholic fatty liver disease

          Non-alcoholic fatty liver disease (NAFLD) has a global prevalence of 25% and is a leading cause of cirrhosis and hepatocellular carcinoma. NAFLD encompasses a disease continuum from steatosis with or without mild inflammation (non-alcoholic fatty liver), to non-alcoholic steatohepatitis (NASH), which is characterised by necroinflammation and faster fibrosis progression than non-alcoholic fatty liver. NAFLD has a bidirectional association with components of the metabolic syndrome, and type 2 diabetes increases the risk of cirrhosis and related complications. Although the leading causes of death in people with NAFLD are cardiovascular disease and extrahepatic malignancy, advanced liver fibrosis is a key prognostic marker for liver-related outcomes and overall mortality, and can be assessed with combinations of non-invasive tests. Patients with cirrhosis should be screened for hepatocellular carcinoma and oesophageal varices. There is currently no approved therapy for NAFLD, although several drugs are in advanced stages of development. Because of the complex pathophysiology and substantial heterogeneity of disease phenotypes, combination treatment is likely to be required for many patients with NAFLD. Healthy lifestyle and weight reduction remain crucial to the prevention and treatment of NAFLD.
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            Treatment of NAFLD with diet, physical activity and exercise.

            Lifestyle intervention can be useful across all the spectrum of NAFLD patients. Losing weight decreases cardiovascular / diabetes risk and also regresses liver disease. Weight reductions of ≥ 10% are required for inducing near universal NASH resolution or fibrosis improvement by at least one stage. However, modest weight losses (>5%) also produce important benefits on NAS and its components. In addition, to improve the success of this intervention we need to explore, beyond total calories and type of weight loss diet, the role of micro and macronutrients, evidence-based benefits of physical activity and exercise and finally supporting these modifications through established behaviour change models and techniques. The Mediterranean diet can reduce liver fat even without weight loss and is the most recommended dietary pattern in NAFLD. The Mediterranean diet is characterized by reduced carbohydrates intake, especially sugars and refined carbohydrates (40% of the calories vs. 50-60% in a typical low fat diet), and increased monounsaturated and omega-3 fatty acids intake (40% of the calories as fat vs. up-to 30% in a typical low fat diet). Both TV sitting (a reliable marker of overall sedentary behaviour) and physical activity are associated with cardio-metabolic health, NAFLD and overall mortality. A 'triple hit behavioural phenotype' of 1) sedentary behaviour, 2) low physical activity, and 3) poor diet have been defined. Clinical evidence strongly supports the role of lifestyle modification as a primary therapy for the management of NAFLD and NASH, and this should be accompanied by the implementation of strategies to avoid relapse and weight regain.
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              Non-alcoholic fatty liver disease

              Non-alcoholic fatty liver disease has emerged a major challenge because of it prevalence, difficulties in diagnosis, complex pathogenesis, and lack of approved therapies. As the burden of hepatitis C abates over the next decade, non-alcoholic fatty liver disease will become the major form of chronic liver disease in adults and children and could become the leading indication for liver transplantation. This overview briefly summarizes the most recent data on the pathophysiology, diagnosis, and treatment of non-alcoholic fatty liver disease. Ongoing clinical trials are focused on an array of disease mechanisms and reviewed here are how these treatments fit into the current paradigm of substrate overload lipotoxic liver injury. Many of the approaches are directed at downstream events such as inflammation, injury and fibrogenesis. Addressing more proximal processes such as dysfunctional satiety mechanisms and inappropriately parsimonious energy dissipation are potential therapeutic opportunities that if successfully understood and exploited would not only address fatty liver disease but also the other components of the metabolic syndrome such as obesity, diabetes and dyslipidemia.
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                Author and article information

                Contributors
                Journal
                World J Gastroenterol
                World J Gastroenterol
                WJG
                World Journal of Gastroenterology
                Baishideng Publishing Group Inc
                1007-9327
                2219-2840
                7 July 2024
                7 July 2024
                : 30
                : 25
                : 3179-3181
                Affiliations
                Department of Gastroenterology and Hepatology, West China Hospital, Sichuan University, Chengdu 610041, Sichuan Province, China
                Department of Gastroenterology and Hepatology/Medical Engineering Integration Laboratory of Digestive Endoscopy, West China Hospital, Sichuan University, Chengdu 610041, Sichuan Province, China. hubing@ 123456wchscu.edu.cn
                Author notes

                Author contributions: Liu CQ and Hu B co-authored and revised the manuscript; and both authors have read and approved the final manuscript.

                Corresponding author: Bing Hu, MD, Editor-in-Chief, Professor, Department of Gastroenterology and Hepatology/Medical Engineering Integration Laboratory of Digestive Endoscopy, West China Hospital, Sichuan University, No. 37 Guoxue Alley, Chengdu 610041, Sichuan Province, China. hubing@ 123456wchscu.edu.cn

                Article
                jWJG.v30.i25.pg3179 94400
                10.3748/wjg.v30.i25.3179
                11238675
                f05c50f8-e3b0-4b7d-8ffd-e6481498baa1
                ©The Author(s) 2024. Published by Baishideng Publishing Group Inc. All rights reserved.

                This article is an open-access article that was selected by an in-house editor and fully peer-reviewed by external reviewers. It is distributed in accordance with the Creative Commons Attribution NonCommercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial.

                History
                : 18 March 2024
                : 27 May 2024
                : 17 June 2024
                Categories
                Letter to the Editor

                nonalcoholic fatty liver disease,dietary and lifestyle interventions,scale,adherence,exercise

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