Fiber serves a crucial function in maintaining healthy digestion by promoting regular bowel movements and preventing constipation. It adds bulk to stool, making it easier to pass through the digestive tract. Moreover, fiber helps regulate digestion by slowing down the absorption of sugar and enhancing feelings of fullness, which can aid in weight management. A diet rich in fiber, which includes fruits, vegetables, whole grains, and legumes, supports overall gut health and may reduce the risk of various gastrointestinal disorders.