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Source: U.S. Department of Health and Human Services, National Institutes of Health, National Heart Lung and Blood Institute. www.
Angina is chest pain or discomfort that occurs when an area of your heart muscle doesn't get enough oxygen-rich blood. Angina may feel like pressure or squeezing in your chest. The pain also may occur in your shoulders, arms, neck, jaw, or back. It can feel like indigestion.
Angina is a symptom of an underlying heart condition. Angina pain is the result of reduced blood flow to an area of heart muscle. Coronary artery disease (CAD) usually causes the reduced blood flow.
Underlying Causes of Angina:
Causes of CAD
High amounts of certain fats and cholesterol in the blood
High blood pressure
High amounts of sugar in the blood due to insulin resistance or diabetes
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Narrowed artery
Reduced blood flow