Fiber plays a crucial role in maintaining digestive health by adding bulk to the diet, promoting regular bowel movements, and preventing constipation. It supports healthy gut microbiota and may reduce the risk of gastrointestinal disorders. Additionally, fiber helps regulate blood sugar levels and aids in controlling appetite, which can be beneficial for weight management. A diet rich in fruits, vegetables, and whole grains provides both soluble and insoluble fiber, crucial for overall digestive function.