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How Your Heart Works
Your heart is vital to your life. Its primary job is to pump blood through the arteries, delivering oxygen and essential nutrients to cells, while carrying away waste products for processing and disposal by other organs. Problems arise, however, when there is a buildup of (bad) LDL cholesterol with fats and other substances on the inner walls of arteries. This buildup contributes to dysfunctional blood vessels and the formation of plaque. Plaque, in turn, can create jams or blocks in the arterial pathways, restricting blood flow or even blocking it entirely by forming a blood clot. Blood clots can block blood flow to the heart, leading to heart attacks. When a clot blocks flow to or in the brain, it causes stroke. Atherosclerosis, or hardening of the arteries, is one of the most common forms of cardiovascular disease.
Why Do Arteries Harden?
Scientific research has shown that high blood cholesterol is one main factor causing these deposits in arteries. A diet high in fat, especially saturated fat, trans fat and dietary cholesterol can contribute to elevated blood cholesterol levels.
What You Can Do
Evidence suggests that narrowing of the arteries can be slowed down, and, in some cases, even reversed, by eating a low-saturated fat, high-fiber diet and by making other lifestyle changes including not smoking, getting regular exercise, and reducing stress levels.
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