Microbiota, Fiber, and NAFLD: Is There Any Connection?

Area of Science:

• Gastroenterology
• Nutrition Science
• Microbiology

Background:

• Non-alcoholic fatty liver disease (NAFLD) is linked to gut microbiota dysbiosis.
• Dietary interventions are being explored to modulate gut microbiota for NAFLD treatment.

Purpose of the Study:

• To investigate the role of dietary fiber (DF) and its prebiotic properties in managing NAFLD.
• To assess the impact of DF supplementation, specifically oligofructose, on weight loss, gut microbiota composition, and intestinal barrier function in NAFLD.

Main Methods:

• Review of studies on dietary fiber interventions for NAFLD.
• Analysis of oligofructose supplementation effects on weight, beneficial metabolites, pathogenic bacteria (e.g., Bifidobacteria), and intestinal permeability.
• Examination of insoluble fiber intake and liver fibrosis scores.

Main Results:

• Oligofructose supplementation aids weight loss and enhances beneficial metabolites.
• DF intake decreases pathogenic bacteria and improves intestinal barrier function.
• Higher insoluble fiber consumption (≥7.5 g/day) correlates with improved liver fibrosis scores.

Conclusions:

• Dietary fiber, especially prebiotics like oligofructose, shows promise in managing NAFLD by positively altering gut microbiota.
• DF supplementation may be a viable strategy to prevent NAFLD progression, particularly in early stages.