Introduction

Atherosclerosis is a slow disease in which your arteries become clogged and hardened. Fat, cholesterol, calcium, and other substances form plaque, which builds up in arteries. Hard plaque narrows the passage that blood flows through. That causes arteries to become hard and inflexible (atherosclerosis is also known as hardening of the arteries). It leads to cardiovascular disease, which is the leading cause of death in people over 45. Soft plaque is more likely to break free from the artery wall and cause a blood clot, which can block blood flow to vital organs.

The effects of atherosclerosis differ depending upon which arteries in the body narrow and become clogged with plaque. If the arteries that bring oxygen-rich blood to your heart are affected, you may have coronary artery disease, chest pain, or a heart attack. If the arteries to your brain are affected, you may have a transient ischemic attack (TIA) or a stroke. If the arteries in your arms or legs are affected, you may develop peripheral artery disease. You may also develop a bulge in the artery wall (aneurysm).

Lowering blood pressure and LDL ("bad") cholesterol levels, eating a healthy diet with lots of fruits and vegetables, quitting smoking, losing weight, and getting more exercise can prevent atherosclerosis.

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