High-fiber diets can positively impact cholesterol levels by lowering LDL (bad cholesterol) and increasing HDL (good cholesterol). Soluble fiber, found in foods like oats, beans, and fruits, binds to cholesterol in the digestive system and helps remove it from the body. This process leads to improved heart health and may reduce the risk of cardiovascular diseases. Furthermore, a high-fiber intake supports digestive health and can help in weight management, contributing to overall well-being and reduced blood pressure.