Cholesterol plays a dual role in human health, being essential for cell membrane structure and hormone production. However, imbalanced cholesterol levels, particularly high levels of low-density lipoprotein (LDL), contribute to atherosclerosis and heart disease. It's essential to maintain healthy cholesterol through a balanced diet rich in fiber and healthy fats while limiting saturated and trans fats. Regular physical activity also promotes healthier cholesterol levels, highlighting the need for a holistic approach to cardiovascular health.