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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Lifestyle changes, such as a healthy diet and increased exercise are important for everyone with raised blood pressure. Medicines to treat hypertension are

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high blood pressure see hypertension . Author not available, HIGH BLOOD PRESSURE. , The Columbia Encyclopedia, Sixth Edition 2007.

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It is marked by elevated blood pressure (hypertension), protein in the urine. endoglin in the September 7, 2006 "New England Journal of Medicine.

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Ask your doctor how often you should have your blood pressure checked. Some people may need to check their blood pressure regularly at home. Medicines and

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Antihypertensive Drugs: Encyclopedia of Nursing & Allied Health. Definition. Antihypertensive drugs are medicines that help lower blood pressure.

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Information about blood pressure in the Hutchinson encyclopedia. low blood pressure, blood pressure medicine, systolic blood pressure, diastolic blood

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Some common medicines can raise your blood pressure. National Library of Medicine Medical Encyclopedia: Pain Medications, Drug Information.

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Medical Encyclopedia. Blood pressure check. Blood pressure check. To measure blood pressure, your doctor uses an instrument call a "sphygmomanometer," more

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Vasodilators from Encyclopedia of Medicine in Health provided free by Find Vasodilators usually are prescribed with other types of blood pressure drugs

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Beta blockers from Encyclopedia of Medicine in Health provided free by Find This medicine may take several weeks to noticeably lower blood pressure.

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Search Medical Encyclopedia . It can be dangerous to suddenly stop taking blood pressure medicine. Also, do not increase your dosage of any medicine

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ScienceDirect - The American Journal of Emergency Medicine : The Normal Difference in Bilateral Indirect Blood Pressure Recordings in Normotensive

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Secondary hypertension indicates that the high blood pressure is a result .. Remedies for High Blood Pressure from Earth Clinic's Folk Medicine Archive

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The bottom number is the diastolic blood pressure reading. . U.S. National Library of Medicine, 8600 Rockville Pike, Bethesda, MD 20894

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There are many different medicines that can be used to treat high blood pressure. Such medicines include:. Alpha blockers; Angiotensin-converting enzyme


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