High-fiber intake positively affects cholesterol levels by lowering LDL (bad) cholesterol and improving overall heart health. Dietary fiber, particularly soluble fiber found in oat bran and beans, binds to cholesterol in the digestive system, which helps eliminate it from the body. This process can reduce the risk of heart disease. Furthermore, a diet rich in fiber can promote healthy gut microbiota and optimize digestion, creating an overall environment that supports cardiovascular health. Consistently incorporating fiber-rich foods can significantly benefit cholesterol management.