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What is a Heart Attack?

Pipes which supply blood flow to heart muscle are known as coronary arteries. Abnormalities inside the coronary arteries can cause decreased blood flow. This results in damage to heart muscle.
What is a Heart Attack and How Does it Develop?
An explanation of what happens inside the coronary artery before and during a heart attack.
Atherosclerosis - In the Heart and Elsewhere
Abnormal cholesterol causes a build-up of plaque and hardens the pipes (arteries) of the body. At first, this process causes no symptoms. When the plaque builds and narrows the artery, it may be to late. Angina, heart attacks, or strokes can result.

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