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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Interpretation of Results
Interpretation of Results. Blood Pressure measurement gives two readings: The normal range for this value would be around 110 - 140 millimetres of

Blood Pressure Rangem, Hypertension, Stage, Healthy BP - Guide4Living
In the past, a blood pressure range of 120 to 139 systolic and 80 to 89 diastolic was classified as being high normal. Recently, medical experts amended

Journal of Human Hypertension - Normal blood pressure values as
Normal blood pressure values as perceived by normotensive and hypertensive subjects . Similar results were obtained when previously used cutoff values

All about high blood pressure
High blood pressure, or hypertension, means that the systolic or diastolic pressure or both are above the normal range. A reading above 140/90 mmHg is

eMJA: Ambulatory blood pressure monitoring
Normal blood pressure values for adults are < 135/85 mmHg for daytime, .. Ambulatory blood pressure normality: results from the PAMELA study.

The relationship between changes in normal-range systolic blood
Little is known about the effect of normal-range blood pressure (BP) on cognitive cerebrovascular damage has complicated the interpretation of results.

UK National Kidney Federation - Know your numbers
Always check the local normal range for the numbers with staff as it may vary between Blood Pressure is the pressure produced by the heart to pump blood

Effects of Normal, Pre-Hypertensive, and Hypertensive Blood
Of those, 76 patients had normal blood pressure of 114/71 mmHg. Another 157 had blood pressure in the pre-hypertensive range ā” 128/76 mmHg and 41 were in

What Is a Normal Blood Pressure? Don't Be Out Of That Range, Or Else
What Is a Normal Blood Pressure? Don't Be Out Of That Range, Or Else. When we read the results that this device gives us, the Systolic pressure is the

Blood Pressure Measurement - Definition, Purpose, Precautions
As there may be no prior knowledge of the patient's previous blood pressure for comparison, a wide range of normal values apply to patients of different

UK National Kidney Federation - Know your numbers - Transplant
There is not a ā˜normalā™ range for creatinine in transplant patients but the Blood Pressure is the pressure produced by the heart to pump blood around

Blood Test Results Normal Range Reference Chart - BloodBook, Blood
The area is then re-cleaned and pressure is placed on the area with a small Normal Range Results The results of virtually all Blood tests ordered in

What is blood pressure?
If you are being treated for high blood pressure, you still have high blood pressure even if you have repeated readings in the normal range.

High Blood Pressure: Heart and Blood Vessel Disorders: Merck
However, the higher the blood pressure, the greater the risk of complicationsā”even within the normal blood pressure rangeā”so these limits are somewhat

What Is High Blood Pressure?
If you are being treated for high blood pressure and have repeated readings in the normal range, you still have high blood pressure.

Blood pressure normal? Maybe now it isnā™t.
What was classified as normal or high-normal blood pressure (a systolic pressure action before the blood pressure climbs any higher - and into the range

Blood pressure - Wikipedia, the free encyclopedia
Taking blood pressure levels at home or work with a home blood pressure monitoring device may help determine a person's true range of arterial pressure

What Is Normal Blood Pressure?
Medical guidelines state that a normal blood pressure for most adults is less At Novartis, we call this range the BP Success Zone (less than 140/90 to

Blood Pressure Chart - Normal Blood Pressure Range
Normal blood pressure range chart, using a blood pressure monitor. which results in a much higher BP reading than normal, due to the authoritative


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