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The coronary arteries supply blood to the heart muscle to provide oxygen for respiration., These arteries can become blocked by a build-up of fatty plaques containing cholesterol, resulting in coronary heart disease., If a coronary artery is blocked, the blood supply to part of the heart muscle is cut off. That part of the heart cannot continue to contract, causing a heart attack., Possible causes of CHD include stress and smoking, which increases your blood pressure., Poor diets high in cholesterol and a lack of exercise can also lead to a build up of plaque in arteries., Cholesterol is a type of lipid (fatty substance) that can contribute to CHD., Plaques are fatty patches that form inside arteries restricting blood flow and causing high blood pressure..

The Definition and Causes of CHD

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