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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Patients who have a very high blood pressure are said to have malignant high blood pressure cases in the U.S., the underlying cause cannot be determined

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Malignant hypertension (hypertensive crisis) is high blood pressure that increases rapidly. The cause may be unknown, or it may be caused by a medication or

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Malignant hypertension is rare but very serious. Blood pressure levels can rise very quickly. There is a danger of stroke and usually the person has severe

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There are some anecdotal or transient causes of high blood pressure. . When hypertension causes increased intracranial pressure, it is called malignant

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What causes high blood pressure is everywhere around us. Malignant hypertension is not the same as accelerated hypertension but it is the worst

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Malignant hypertension can develop very quickly, and rapidly causes organ Am I at Risk for Malignant Hypertension? Symptoms of High Blood Pressure

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Very high blood pressure can cause headaches, vision problems, nausea, and vomiting. Malignant high blood pressure (hypertensive crisis), which is blood

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Many kidney diseases cause high blood pressure - high blood pressure is very . Malignant hypertension - very severe high blood pressure that causes

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Like high blood pressure in general, the exact cause of malignant hypertension is not completely understood. The details of how malignant hypertension

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Causes, incidence, and risk factors. Blood pressure measurements are the Malignant hypertension is usually defined as very high blood pressure with

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What is malignant Hypertension. How to control High Blood pressure emergency. Informative article on Malgnent hypertension causes symptoms treatment

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Malignant hypertension is a complication of hypertension characterized by very What causes high blood pressure? - High blood pressure is far more common

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Malignant high blood pressure (hypertensive crisis), which is hypertension that rises rapidly, can also cause these symptoms.

InteliHealth:
Rarely, the appearance of malignant hypertension is the first sign that a person has high blood pressure. The cause of this condition is usually unknown,

MedlinePlus Medical Encyclopedia: Malignant hypertension
Illustrations; Alternative Names; Definition; Causes; Symptoms; Exams and Tests Malignant hypertension is usually defined as very high blood pressure

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Even if high blood pressure does cause symptoms, the symptoms are the high blood pressure is very severe, a condition known as malignant hypertension.

eMedicine - Hypertension, Malignant : Article by John D Bisognano
Both hyperthyroidism and hypothyroidism can cause hypertension. .. Also, see eMedicine's patient education article High Blood Pressure.

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It is better to prevent episodes of malignant high blood pressure than to treat an episode after you have already had one. One of the most common causes of

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In people who have malignant hypertension, severe high blood pressure causes bleeding and swelling of the retina (the light-sensitive membrane on the inner


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