Functional Roll for Non-alcoholic Fatty Liver Disease

Background: Low physical activity and poor eating habits (incl. high fat and carbohydrates but low fiber intake) are the main reason of obesity epidemic in western societies. The most common clinical complication of this condition is non-alcoholic fatty liver disease (NAFLD), that can lead to liver cirrhosis and its complications. Recent studies show that gut dysbiosis may play a crucial role in the pathogenesis of NAFLD. On the other hand plant fiber shows beneficial properties in remodeling of the gut microbiome. Aim: The project aims to create low-calorie bars / snacks with an increased fiber content (12 g/bar), replacing the second breakfast and/or afternoon tea. The main scientific aim is to examine the influence of the extra supply of fiber on i. gut microbiota composition and metabolism and ii. liver function in patients with NAFLD. Methods: Randomized placebo-controlled double blind study. A group of patients diagnosed with NAFLD, divided into 2 groups: study (12% fiber bar) and placebo (maltodextrin bar). Two study phases: preliminary study (5 weeks, 20 patients) and main study (24 weeks, 120 patients). Both clinical and laboratory (stool and serum) aspects will be analyzed, incl. anthropometric measurements, nutrition tests (food frequency questionnaire), health-related quality of life, liver ultrasound and elastography, serum and stool biochemistry and microbiome analysis.