Fiber contributes to heart health in several ways. It helps lower cholesterol levels by binding with fatty acids and promoting their excretion from the body. This can reduce the risk of heart disease and lower blood pressure. Additionally, fiber-rich foods can help regulate blood sugar levels, preventing spikes that could stress the cardiovascular system. Furthermore, a diet high in fiber often includes fruits, vegetables, and whole grains, which are all associated with reduced inflammation and improved overall heart health.