The heart pumps about 3000 gallons of blood per day throughout the body. To achieve this, it needs good nutrition and oxygen. Poorly nourished heart tissue may lose its function over time, leading to heart failure. The main blood vessel feeding the heart is the arteries on the surface of the heart called the Coronary Arteries. This vessel, which is clogged as a result of plaques formed due to some factors, causes the heart not to be fed at a sufficient level and cannot receive oxygen. A heart attack occurs as a result of occlusion of a coronary artery. Coronary Artery Disease should be taken seriously and should not be neglected.