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Coronary Heart Disease
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- Mon Sep 28 2009
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... Coronary Heart Disease: The risks and factors The heart is a crucial muscle in the body, it pumps on average five litres of blood a minute around the body. The heart itself has its own blood supply from a network of blood vessels on the surface of the heart known as the coronary arteries. Coronary Heart Disease (CHD) is formed when the supply of blood to the heart is blocked off due to the build up of fatty substances in these coronary arteries. CHD has numerous causes and thus it is the UK's biggest killer with approximately 300,000 people having a heart attack each year. Cholesterol is one of the four main causes of CHD, it is made in the liver from saturated fats and is carried through the blood stream by lipoproteins. There are also many different types of lipoproteins, but the main two are low density lipoproteins (LDL) and high density













