
Atherosclerosis is a disease in which plaque builds up inside your arteries.
Atherosclerosis is a disease in which plaque builds up inside your arteries. Plaque is a sticky substance made up of fat, cholesterol, calcium, and other substances found in the blood. Over time, plaque hardens and narrows your arteries. That limits the flow of oxygen-rich blood to your body and can lead to serious problems, including.
• Coronary artery disease. These arteries supply blood to your heart. When they are blocked, you can suffer angina or a heart attack.
• Carotid artery disease. These arteries supply blood to your brain. When they are blocked you can suffer a stroke.
• Peripheral arterial disease. These arteries are in your arms, legs and pelvis. When they are blocked, you can suffer from numbness, pain and sometimes infections.
• Atherosclerosis usually doesn’t cause symptoms until it severely narrows or totally blocks an artery. Many people don’t know they have the disease until they have a medical emergency.