The role of fiber in promoting satiety is crucial as it slows down the digestion process, helping individuals feel fuller for longer. It adds bulk to meals, which can decrease overall calorie intake. High-fiber foods, such as fruits, vegetables, and whole grains, promote a feeling of fullness due to their volume and the time needed for digestion. This helps control hunger and may contribute to weight management. Adequate fiber intake also supports digestive health by promoting regular bowel movements.