However, the body makes enough cholesterol, and any dietary cholesterol may be considered to be excess. High cholesterol is a leading risk factor for heart disease. The cholesterol or plaque build-up causes arteries to become thicker, harder and less flexible, slowing down and sometimes blocking blood flow to the heart. When blood flow is restricted, chest pain or angina can result. When blood flow to the heart is severely impaired or stops completely, a heart attack can result.
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