Fiber plays a crucial role in heart health by helping to lower cholesterol levels and regulate blood pressure. Soluble fiber, found in foods like oats and beans, binds with cholesterol in the digestive system, reducing its absorption. This process aids in maintaining a healthy lipid profile, thereby decreasing the risk of cardiovascular diseases. Additionally, fiber promotes healthy digestion and helps regulate blood sugar levels, supporting overall metabolic health. A diet rich in fiber contributes to feelings of fullness, promoting weight maintenance, which is vital for heart health.