FGF19 and metabolic dysfunction-associated steatotic liver disease: In this current randomized controlled pilot study conducted on patients with NAFLD, we found that in the absence of weight loss, 12 weeks of prebiotic treatment (ITF supplementation) markedly increased the abundance of fecal Bifidobacterium species with no significant changes in LFC or other liver-related parameters, including metabolic endotoxemia and FGF-19 levels.