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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Diagnosis is made by taking the blood pressure which is usually done by a doctor or nurse using a blood pressure machine (sphygmomanometer).

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In the case of 120 mm Hg, it's the pressure required to push a column of mercury up 120 millimetres in a blood pressure measuring machine).

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How Is Blood Pressure Measured? Blood pressure is measured using either a sphygmomanometer (a familiar device with a long name) or a blood pressure machine.

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Listen carefully for the first sound. Check the blood pressure reading The machine will show your systolic and diastolic blood pressures on the screen.

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Does that sound too difficult or tedious to you? If you have an electronic blood pressure machine at home then take your blood pressure reading the

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The sound of the blood pulsing through the artery can be heard until the artery If you are using a home blood pressure machine, another person will not

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The sound of the blood pulsing through the artery can be heard until the artery is no If you are using a home blood pressure machine (monitor or cuff),

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How to monitor your blood pressure at home. Note when you no longer hear the beating sounds. Free blood pressure machines: Are they accurate?

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The first sound to be heard is the systolic pressure (top number of a If you are using a home blood pressure machine, another person will not need to be

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When the pressure is low enough, the turbulence stops and the sounds go away. If you have a digital blood pressure machine of your own, this is the type

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