Cholesterol is a waxy, fatlike substance that the body needs to function normally. Cholesterol is naturally present in cell walls or membranes everywhere in the body, including the brain, nerves, muscles, skin, liver, intestines, and heart. If a person has too much cholesterol in the bloodstream, the excess may be deposited in arteries, including the coronary arteries of the heart, the carotid arteries to the brain, and the arteries that supply blood to the legs.
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Cholesterol A-Z List: Complete Listing of Cholesterol Related Information