What is Cholesterol?Cholesterol is a sterol (a combination steroid and alcohol). Cholesterol is a lipid found in the cell membranes of all tissues, and it is transported in the blood plasma of all animals. Because cholesterol is synthesized by all eukaryotes, trace amounts of cholesterol are also found in membranes of plants and fungi.The name originates from the Greek chole- (bile) and stereos (solid), and the chemical suffix -ol for an alcohol, as researchers first identified cholesterol in solid form in gallstones by Francois Poulletier de la Salle in 1769. However, it is only in 1815 that chemist Eugene Chevreul named the compound "cholesterine".[2]Most of the cholesterol is synthesized by the body and some has dietary origin. Cholesterol is more abundant in tissues which either synthesize more or have more abundant densely-packed membranes, for example, the liver, spinal cord and brain. It plays a central role in many biochemical processes, such as the composition of cell membranes and the synthesis of steroid hormones. Cholesterol is insoluble in blood, but is transported in the circulatory system bound to one of the varieties of lipoprotein, spherical particles which have an exterior composed mainly of water-soluble proteins. The main types, low-density lipoprotein (LDL) and high-density lipoprotein (HDL) carry cholesterol from and to the liver.According to the lipid hypothesis, abnormally high cholesterol levels (hypercholesterolemia) and abnormal proportions of LDL and HDL are associated with cardiovascular disease by promoting atheroma development in arteries (atherosclerosis). This disease process leads to myocardial infarction (heart attack), stroke and peripheral vascular disease. As high LDL contributes to this process, it is termed "bad cholesterol", while high levels of HDL ("good cholesterol") offer a degree of protection. The balance can be redressed with exercise, a healthy diet, and sometimes medication. |
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Medicine and Man » Blog Archive » High blood pressure education videos High blood pressure education videos. High blood pressure or hypertension is extremely common. Long standing hypertension has many complications including Notice to Readers: National High Blood Pressure Education Month May is National High Blood Pressure Education Month in the United States, and May 17 is World Hypertension Day. Approximately 72 million persons in the National High Blood Pressure Education Program Free high blood pressure education materials, including reproducible handouts and factsheets, recipes based on the DASH (Dietary Approaches to Stop MedlinePlus: High Blood Pressure (Mayo Foundation for Medical Education and Research); Secondary High Blood Pressure: When Another Condition Causes Hypertension(Mayo Foundation for Medical New high blood pressure guidelines say start early, treat aggressively The National High Blood Pressure Education Program Coordinating Committee â“ a coalition of 39 major professional, public and voluntary organizations and NHM Health Focus: High Blood Pressure Education National Health Museum Health Focus: High Blood Pressure Education. National High Blood Pressure Education Month Help prevent and control high blood pressure using the education materials and activity ideas from this national campaign. NHLBI HP 2010 Cardiovascular Gateway National High Blood Pressure Education Month; Slide Shows. The 4th Report on High Blood Pressure in Children and Adolescents National Heart, Lung, and Blood Institute (NHLBI) The National Heart, Lung, and Blood Institute is a part of the US National Institutes of Continuing Education · Join the Health Information Network Your Guide to Lowering High Blood Pressure, NHLBI This site, for people who want to learn about preventing and controlling high blood pressure. Based clinical guidelines and research studies, |
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