Fiber plays a crucial role in a healthy digestive system by promoting regular bowel movements and preventing constipation. It adds bulk to the stool, facilitating its passage through the intestines, and supports a balanced gut microbiome by acting as a prebiotic. High-fiber diets can also aid in weight management by increasing feelings of fullness and stabilizing blood sugar levels. Overall, fiber-rich foods contribute to long-term gastrointestinal health, reducing the risk of digestive diseases. Incorporating fruits, vegetables, whole grains, and legumes can greatly enhance daily fiber intake.