31% of all deaths in the world result from cardiovascular diseases, the most prevalent one in this category being atherosclerosis - the accumulation of fatty substances in the vessel walls. Who has never heard of dangers associated with an increased blood cholesterol level? There exist LDL lipoproteins which transport cholesterol in the body and HDL lipoproteins which transfer it back to the liver. A low HDL blood concentration is the single most important risk factor for the occurrence of atherosclerosis. A well-known connection exists between the forms of endothelin gene and the HDL level.
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