Atherosclerosis can affect arteries all over the body. There are different names for atherosclerosis depending on which arteries it affects.

Carotid artery disease is a form of atherosclerosis that affects the carotid arteries, which bring blood to the brain. This form of atherosclerosis can lead to stroke.

Coronary heart disease is a form of atherosclerosis that affects the coronary arteries, which bring blood to the heart muscle. This form of atherosclerosis can cause chest pain and lead to heart attack.

Renal artery stenosis is a form of atherosclerosis that affects the renal arteries, which bring blood to the kidneys. This form of atherosclerosis can cause high blood pressure or lead to kidney disease.

Peripheral artery disease is a form of atherosclerosis that affects the arteries that bring blood to the arms and legs. People with this condition sometimes have pain, tingling, or numbness in their legs when they walk.

How does atherosclerosis cause heart attacks, strokes, and other problems? — Atherosclerosis-related plaques can cause problems in 2 ways:

Plaques can get too big and reduce blood flow to certain body parts. This can cause symptoms (such as pain) in the part of the body that is not getting enough blood.

Plaques can break open, or rupture. When that happens, blood clots form inside the artery and block the blood supply to tissues past the clot. This is what happens during a stroke or a heart attack.

Who is at risk for atherosclerosis? — A person has a higher chance of getting atherosclerosis if he or she:

• Has a high cholesterol or triglycerides (triglycerides are a type of fat found in blood)
• Has high blood pressure
• Has diabetes
• Smokes
• Has an unhealthy diet
• Is overweight or does very little physical activity
• Has a mother or father who got atherosclerosis before the age of 50 years

Will I need tests? — Maybe. Doctors do not typically order tests to check for atherosclerosis in general. Instead, they order tests if they think a patient might have a specific form of atherosclerosis, such as coronary heart disease or peripheral artery disease. The tests for each of these conditions are all very different.

A general test that is often done in people who might have atherosclerosis is called a “lipid profile.” This is a blood test that measures the amounts of different forms of fat and cholesterol.

Can the problems caused by atherosclerosis be prevented? — Yes. To reduce your chances of having a heart attack, stroke, or related problem, do the following:

• Take the medicines your doctor prescribes to treat high blood pressure, high cholesterol, and to prevent clots.
• Lose weight (if you are overweight).
• Choose a diet rich in fruits, vegetables, and low-fat dairy products. Don’t eat a lot of meats, sweets, or refined grains.
• Do something active for at least 30 minutes a day on most days of the week.
• Quit smoking (if you smoke). Ask your doctor for help.
• Limit the amount of alcohol you drink. Have no more than 2 drinks a day if you are a man. Have no more than 1 drink a day if you are a woman.

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