best cardiologist in yelahanka Coronary artery disease (also called coronary heart disease) is the most common type of heart disease. It happens slowly over time when a sticky substance called plaque builds up in the arteries that supply your heart muscle with blood. The plaque narrows or blocks blood flow to the heart muscle and can lead to other heart problems: Angina - chest pain from lack of blood flow Heart attacks - when part of the heart muscle dies from loss of blood flow Heart failure - when your heart can't pump enough blood to meet your body's needs Arrhythmia - a problem with the rate or rhythm of your heartbeat