A high-fiber diet positively affects cholesterol levels by binding to bile acids, reducing their reabsorption in the intestines. This process prompts the liver to utilize cholesterol to produce more bile acids, consequently lowering blood cholesterol levels. Soluble fiber, found in oats, beans, and fruits, is particularly effective in this regard. Additionally, a high-fiber diet can improve overall gut health and regulate blood sugar levels. By promoting heart health and reducing the risk of cardiovascular disease, a high-fiber intake is crucial for maintaining optimal health.