About
Heart disease is any disorder that affects the heart's ability to function normally. The most common cause of heart disease is a narrowing of or

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blockage in the coronary arteries supplying blood to the heart muscle (coronary artery disease). Some heart diseases are present at birth (congenital heart disease).
Other causes include:
- Abnormal heart rhythm
- Abnormal heart valve function
- High blood pressure (hypertension)
- Weakening of the heart's pumping ability, often caused by infection or toxins (cardiomyopathy)
Various forms of heart disease include: