A large body of scientific evidence shows that a diet high in saturated fats and cholesterol can raise blood cholesterol levels and contribute to atherosclerosis. The problem of high blood cholesterol isn't limited to adults. Millions of children also have elevated levels, and thus may be at increased risk of atherosclerosis and coronary heart disease later in life. That's why the American Heart Association recommends that healthy adults and children age 2 and over eat a diet that's low in saturated fats and cholesterol. Eating a proper diet helps reduce the risk of high blood cholesterol and thus the risk of heart attack.
High levels are a large factor in clogging arteries.