Angina is discomfort or pain in the chest that happens when not enough oxygen-rich blood reaches the muscle cells of the heart. The most common cause of angina is coronary artery disease. Coronary artery disease is usually caused by atherosclerosis. In this condition, fatty deposits (called plaque) build up along the inside walls of blood vessels that feed oxygen and nutrients to the pumping heart.
To continue reading this article, you must login
Subscribe to Harvard Health Online for immediate access to health news and information from Harvard Medical School.