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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Kids' High Blood Pressure on the Rise
High blood pressure has become more common in US kids and teens as childhood obesity rises, say experts from Morehouse School of Medicine.

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This procedure effectively estimates the average blood pressure during each We can estimate the patient's average blood pressure in a time-of-day

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Background: The aim of this study was to assess which average blood pressure (BP) component (ie, systolic BP SBP, diastolic BP DBP, pulse pressure PP,

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Continuous vs intermittent blood pressure measurements in estimating 24- hour average blood pressure. M di Rienzo, G Grassi, A Pedotti and G Mancia

Welcome to IEEE Xplore 2.0: Mean arterial pressure and average
Mean arterial pressure (MAP) and average blood pressure (ABP) are compared. Average blood pressure is defined here as the area under the pressure pulse

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Average blood pressure and cardiovascular disease-related mortality in middle-aged The aim of this study was to assess which average blood pressure (BP)

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It's important to determine your average blood pressure reading with multiple blood pressure readings from different days. This eMedTV Web page defines

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Blood pressure - Wikipedia, the free encyclopedia
In a study of 100 subjects with no known history of hypertension, an average systolic blood pressure of 112.4 mm Hg and an average diastolic pressure of

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Average blood pressure? Average weight per age? Blood pressure per age? What is average blood pressure? What is the Average blood pressure for a man?

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In 1988-94, the childrenâ™s average systolic blood pressure was 104.6 mm Hg and their average diastolic pressure was 58.4 mm Hg. In 1999-2000, the childrenâ™s

What is Average Blood Pressure and When should you Worry? | Health
An average blood pressure will indicate that your cardiovascular system is functioning properly and that your many blood vessels throughout your body are

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Until recently, normal blood pressure was considered to be the average blood pressure of the population, ie, in the UK the average adult blood pressure is

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Systolic and diastolic blood pressure levels for children and teenagers have risen substantially since 1988, according to a new study supported by the

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BP monitor readings must be taken at different times of day, to determine AVERAGE blood pressure over time. What is important is your AVERAGE BP,

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Itâ™sa means just to alert you whether your blood pressure level is on par with your age. Average Blood Pressure For young people â“ 120/80 mmHg


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