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A heart attack is when the heart is damaged by a sudden lack of blood flow to the heart muscle. This happens because the arteries to the heart muscle become narrowed or blocked. Nicotine in cigarette smoke causes blood vessels to become narrow, reducing the oxygen supply to the heart muscle. This may be why smokers are more likely to have a heart attack than nonsmokers. Many heart attack victims die before they reach the hospital. This means if you smoke and have a heart attack, you’ll probably quit smoking - one way or another.
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