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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Cardiovascular Disease - Centre for Chronic Prevention and Control
Centre for Chronic Disease Prevention and Control Cardiovascular Disease Canadian Coalition for High Blood Pressure Prevention and Control

Hypertension and Family Health History: Chronic Disease Genomics
Blood pressure should be measured every two years beginning at age 18. (1) For comments or questions about this page, please contact the Chronic Disease

VascularWeb: Chronic Venous Insufficiency
Chronic venous insufficiency (CVI) occurs when the valves in your leg veins are High blood pressure, phlebitis, and deep vein thrombosis can cause CVI.

IngentaConnect Blood pressure behaviour in chronic daily headache
The objective was to examine the association between high blood pressure (BP) and chronic daily headache using 24-h ambulatory blood pressure monitorization

Journal of Hypertension - Abstract: Volume 23(5) May 2005 p 921
Blood pressure response to chronic intake of coffee and caffeine: a meta-analysis of randomized controlled trials. Meta-analysis. Journal of Hypertension.

Blood pressure lowering provides double cardiovascular benefit for
Blood pressure lowering provides double cardiovascular benefit for people with Chronic Kidney Disease. New research, published today in the Journal of

Chronic Fatique Syndrome and Blood Pressure: Cryptic Partners?
Dr. William Baumzweiger linked his military patients to a similar if not identical disregulation of blood pressure and a chronic form of brainstem

A Low Blood Pressure Target Prevented Kidney Failure in Patients
Chronic kidney disease is a gradual and progressive loss of function in both kidneys. Many patients with chronic kidney disease have high blood pressure.

More Children On Chronic Medications For Blood Pressure
America's tweens more than doubled their use of type-2 diabetes medications between 2002 and 2005, with girls between 10 and 14 years of age showing a 166

Lowering blood pressure protects stroke victims with chronic
New research, published in the Journal of American Society of Nephrology by The George Institute for International Health in Sydney, has found that lowering

High Blood Pressure is the Most Common Chronic Disorder in Women
High Blood Pressure is the Most Common Chronic Disorder in Women After Menopause.

Chronic Kidney Disease -- familydoctor.org
Information on chronic kidney disease from the American Academy of The most common causes of CKD are high blood pressure, diabetes and heart disease.

Chronic Kidney Disease: A Family Affair
Chronic kidney disease (CKD) is the permanent loss of kidney function. . The leading causes of CKD are diabetes and high blood pressure.

A tilt table test reveals low blood pressure (neurally mediated
A tilt table test often reveals low blood pressure (neurally mediated hypotension - NMH) problems in fibromyalgia and chronic fatigue patients.

globeandmail.com: High blood pressure and chronic diseases go hand
The most authoritative news in Canada featuring articles from The Globe and Mail, breaking news coverage, national news, international news, sports,

National Kidney Foundation: A to Z Health Guide Item
High Blood Pressure and Chronic Kidney Disease in Children: A Guide for Parents. High blood pressure is common in children with chronic kidney disease (CKD)

Natural Cure For Lowering High Blood Pressure : Treating And
TreatingandBeating.com is dedicated to helping others help themselves by providing a Natural Cure For Lowering High Blood Pressure, Fibromyalgia Treatment,

Chronic Cough Causes, Symptoms, Diagnosis, Treatment, and
Read about chronic cough causes such as GERD, postnasal drip, rhinitis, asthma, used in treating high blood pressure, can cause chronic cough.


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