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Published on: April 16, 2019
Diet and exercise in NAFLD/NASH: Beyond the obvious
Georg Semmler1, Christian Datz2, Thomas Reiberger1
1Division of Gastroenterology and Hepatology, Department of Internal Medicine III, Medical University of Vienna, Vienna, Austria.
Diet and exercise are key for managing non-alcoholic fatty liver disease (NAFLD). Calorie restriction is vital, and low-carbohydrate diets show promise, potentially through ketogenesis, for NAFLD and non-alcoholic steatohepatitis (NASH).
Area of Science:
- Hepatology
- Metabolic Syndrome
- Nutritional Science
Background:
- Non-alcoholic fatty liver disease (NAFLD) is the liver manifestation of metabolic syndrome, strongly influenced by lifestyle factors.
- Despite extensive research, clear clinical recommendations for diet and exercise in NAFLD and non-alcoholic steatohepatitis (NASH) remain challenging due to the topic's complexity.
Purpose of the Study:
- To review recent scientific findings on diet and exercise interventions for NAFLD and NASH.
- To summarize established knowledge and highlight novel research directions in NAFLD/NASH management.
- To guide clinicians and researchers through complex nutritional and exercise strategies.
Main Methods:
- Comprehensive literature review of clinical and preclinical studies on diet and exercise in NAFLD/NASH.
- Analysis of evidence regarding calorie restriction, dietary composition, and carbohydrate intake.
- Exploration of emerging concepts like ketogenesis and intermittent calorie restriction.
Main Results:
- Calorie restriction is a critical factor in NAFLD management, irrespective of macronutrient distribution.
- Low-carbohydrate diets demonstrate potential in reducing NAFLD incidence and severity.
- Ketogenesis, potentially induced by intermittent calorie restriction, emerges as a significant area for further research.
Conclusions:
- Personalized dietary and exercise strategies for NAFLD/NASH require a deeper understanding of interactions between diet, exercise, gut microbiota, and host genetics.
- Further translational research is needed to develop tailored interventions beyond general recommendations.
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