Research suggests that the gut microbiome plays a role in responding to dietary fiber, with studies indicating that individual responses to fiber intake may be influenced by the composition of a person's gut microbiota. The relationship between gut microbiota and dietary fiber is being explored in various contexts, including prediabetes, irritable bowel syndrome, and cardiovascular health. The structure and function of gut microbiota may be a key factor in determining the effectiveness of dietary interventions, including those involving fiber.