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 with high blood pressure may be at risk for silent ischemia, US researchers have using the Canadian Cardiovascular Society grading scale.

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High blood pressure in otherwise healthy adults between the ages of 18 and 83 is as determined by the Wechsler Adult Intelligence Scale (WAIS).

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In addition to large scale strokes, chronic high blood pressure can also cause micro-vascular infarcts (blockages within very small blood vessels inside the

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In one 20-year study, for example, men who periodically measured highest on the stress scale were twice as likely to have high blood pressure as those with

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Hypertension (high blood pressure) was associated with an increased risk of all The patients also had reduced average scores on a scale designed to

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High blood pressure and pregnancy â” Here's what you need to know. the risk of preeclampsia â” but large-scale studies haven't confirmed the results.

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The good news is that 70% of people who suffer from high blood pressure only have a mild case. Their blood pressure hits the diastolic scale somewhere

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He notes that the design of the study does not definitively prove that these drugs raise the risk of high blood pressure. Only a full-scale clinical trial

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High blood pressure (HBP) is among the most prevalent and important risk factors for cardiovascular, cerebrovascular, and renal disease.

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Very high blood pressure can also cause arteries to bulge (aneurysm) or burst is not very useful when trying to control blood pressure on a large scale.


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