Causes and Risk Factors for Heart Attack

Heart attack is a disorder of blood supply to a part of the heart, causing heart cells die. Each year, about 1.5 million people in the United States had a heart attack, and nearly half of them died, making it remains a leading cause of death for both men and women in the United States.

Heart attacks commonly occur due to the buildup of cholesterol and other substances in the arterial wall, which affects blood flow to the heart muscle. Without an adequate blood supply, heart muscle tissue can be damaged.

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