What is cholesterol?
Cholesterol is a waxy, fatlike substance that is naturally present in cell walls or membranes everywhere in the body. Your body uses cholesterol to produce many hormones, vitamin D, and the bile acids that help to digest fat.
Medically Reviewed by a Doctor on 7/22/2014
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High-density lipoprotein (HDL) is positively associated with a decreased risk of coronary heart disease (CHD).