Phytosterols are plant-derived compounds that resemble cholesterol in structure. They are found in various foods, including nuts, seeds, whole grains, and vegetable oils. Phytosterols can help lower cholesterol levels by blocking the absorption of dietary cholesterol in the intestines, which may contribute to heart health. In addition to their cholesterol-lowering effects, phytosterols are often added to functional foods, such as margarine and yogurt, to enhance their health benefits. Research suggests that incorporating phytosterols into a balanced diet may support overall cardiovascular health and reduce the risk of heart disease.