Increase satiety, lower cholesterol, and promote defecation.

1. Increase satiety: Dietary fiber can increase the volume of food, make people feel fuller, and help control appetite and reduce food intake.

2. Lower cholesterol: Some soluble fibers in dietary fiber can combine with cholesterol to help reduce the absorption of cholesterol and lower cholesterol levels in the blood.

3. Promote defecation: Dietary fiber can increase the volume of feces, soften feces, stimulate intestinal peristalsis, promote defecation, and prevent constipation.