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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IngentaConnect ALCOHOL IS BAD FOR BLOOD PRESSURE
ALCOHOL IS BAD FOR BLOOD PRESSURE. Authors: Puddey, Ian B; Beilin, Lawrence J. Source: Clinical and Experimental Pharmacology and Physiology, Volume 33,

Weightlifting: Bad for your blood pressure? - Revolution Health
Can weightlifting cause high blood pressure or worsen existing high blood pressure?

EMOTIONAL STRESS IS BAD FOR BLOOD PRESSURE
Dwelling on emotional issues may lead to high blood pressure problems, say US researchers.

SP2: Bad for your blood pressure? | Tech News on ZDNet
That's what some IT managers say, a survey finds. Even more believe it'll be the toughest Windows update ever.

Treating poor circulation problems - bad blood circulation
Don't let poor or bad circulation ruin your life! blood exerts great force against the walls of the blood vessels, causing the blood pressure to rise.

Both High and Low Blood Pressure bad for Brain Function
Both High and Low Blood Pressure bad for Brain Function.

Blood pressure rising around the globe - Heart health- msnbc.com
The idea: to rev up world governments to fight bad blood pressure just as countries have banded together in the past to fight infectious diseases.

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High-fat meal=bad blood pressure · Warning, BBQ lovers about toxin Eating a single high-fat meal can cause a spike in blood pressure, researchers in

Is 118/47 a bad blood pressure reading? - Yahoo! Answers
Is 118/47 a bad blood pressure reading? I am a nurse, it is not a bad reading at all. The 47 is a little low, but not the end of the world.

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Solutions and products for oral chelation, cholesterol, diabetes, high blood pressure, cancer, thyroid and adrenal function.

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Fieldman warned that bad-tempered bosses could We know that high blood pressure and heart supervisor who caused high blood pressure they could .

Bad Marriages Exacerbate High Blood Pressure
New research has found that if you already have a tendency for high blood pressure, conflict with your mate sends it even higher.

Low Blood Pressure (Hypotension) Causes, Symptoms, Diagnosis, and
How does the body maintain normal blood pressure? Is low blood pressure bad for your health? What are low blood pressure signs and symptoms?

TV Bad for Obese Kids' Blood Pressure? - High Blood Pressure
TV Bad for Obese Kids' Blood Pressure? Study: Obese Children Who Watch Lots of TV May Be More Likely to Have High Blood Pressure. By Miranda Hitti

Bad posture could raise your blood pressure - 11 August 2007 - New
Scientists have found a direct link between the neck muscles and an area of the brainstem that controls heart rate and blood pressure.

Is Caffeine Bad for Your Heart?
Is Caffeine Bad for Your Heart? New Research Suggests Caffeine Elevates Blood Pressure, Stress. By Salynn Boyles WebMD Medical News

Weightlifting: Bad for your blood pressure? - MayoClinic.com
Weightlifting can cause temporary, sometimes dramatic, increases in blood pressure.

High Blood Pressure -- Why It Is Bad
High blood pressure makes your heart work harder than normal. Both the heart and arteries are then more prone to injury. High blood pressure increases the

InteliHealth:
Does high blood pressure have anything to do with cholesterol? Does drinking coffee affect my blood pressure? Alcohol is bad for blood pressure but good for


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