Atherosclerosis

Atherosclerosis is the buildup of fatty deposits called plaque on the inside walls of arteries. Arteries are blood vessels that carry oxygen and blood to the heart, brain, and other parts of the body. As plaque builds up in an artery, the artery gradually narrows and can become clogged. As an artery becomes more and more narrowed, less blood can flow through. The artery may also become less elastic (called "hardening of the arteries"). Atherosclerosis is the main cause of a group of diseases called cardiovascular diseases - diseases of the heart and blood vessels.

Enlargement Source: National Heart, Lung, and Blood Institute

Atherosclerosis can lead to clogged arteries in any part of the body. When the arteries to the heart are affected, angina (chest pain) or a heart attack may result. If arteries in the leg are affected, leg pain may occur. Atherosclerosis of the arteries to the brain can cause strokes.

Atherosclerosis is common in the United States. It often starts in childhood and the arteries become narrowed or clogged over many years.