Plaque build up in the arteries
Answer by Jerry Crespi:
According to the American Heart Association, when the innermost wall of an artery, called the endothelium, is damaged by smoking, diabetes, high blood pressure or high cholesterol levels, waste such as calcium, platelets, fats and other cellular byproducts are allowed to build up inside the artery. This condition, known as atherosclerosis, restricts blood flow and can lead to heart attacks and other cardiac problems. Stopping smoking and controlling blood sugar levels, cholesterol and blood pressure, can help you maintain optimum arterial health and help prevent, or slow the progression of, dangerous calcium buildup.