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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Cholesterol, Blood Pressure and Weight Tracker A handy quick-reference wallet-size guide providing tips on lowering cholesterol and blood pressure, and controlling weight. It features tracking charts lifeclinic.com - Home Lifeclinic : Hypertension, Cholesterol, Stroke and Pre-eclampsia resource. On-line tracking of blood pressure, cholesterol, pulse and weight measurements. Q&A: How to reduce high blood pressure and restore healthy A reader asks,"What are the proven natural products that reduce high blood pressure and restore healthy cholesterol levels? Healthy blood fat and blood pressure levels, cholesterol Heart Infocenter. Healthy blood fat and blood pressure levels. What is normal and what is too high? High Blood Pressure (Hypertension) - Patient UK A score is calculated which takes into account all your risk factors (such as age, sex, smoking status, blood pressure, blood cholesterol level, etc). Blood Pressure, Cholesterol Risk Factors For Alzheimer's High blood pressure and raised serum cholesterol levels are risk factors for Alzheimer's disease. Thresholds for normal blood pressure and serum cholesterol Point prevalence of individuals aged 20-79 (men and women combined) with unfavourably high blood pressure or cholesterol concentrations, as defined by the Blood Pressure and Cholesterol High blood pressure and high cholesterol levels often run in families. You may be at risk if a close relative (parent, grandparent, or sibling) has been Cut down Fat & Cholesterol to reduce high blood pressure The major risk factors for having a stroke or a heart attack are the level of your blood pressure, the level of your blood cholesterol and whether you smoke Heart and Vascular Disease Information for Patients and the Public Contains health information on heart diseases for patients and the public, topics include high blood pressure, cholesterol, obesity, heart attacks, PAD, Controlling Your Blood Pressure and Cholesterol As with high blood pressure, research shows that there is a significant relationship between high cholesterol and heart disease deaths. |
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