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Coronary artery disease (CAD) is a condition in which plaque (plak) builds up inside the coronary arteries. These [[arteries]] supply your heart muscle with oxygen-rich blood.

'''Coronary artery disease''' (CAD) is a condition in which plaque (plak) builds up inside the coronary arteries. These [[arteries]] supply your heart muscle with oxygen-rich blood.

Plaque is made up of fat, cholesterol (ko-LES-ter-ol), calcium, and other substances found in the blood. When plaque builds up in the arteries, the condition is called atherosclerosis (ATH-er-o-skler-O-sis).

Plaque is made up of fat, cholesterol (ko-LES-ter-ol), calcium, and other substances found in the blood. When plaque builds up in the arteries, the condition is called atherosclerosis (ATH-er-o-skler-O-sis).