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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Home Blood Pressure Test - Yahoo! Health Blood pressure is a measure of the force of blood inside an artery. A blood pressure measurement is taken by temporarily stopping the flow of blood in an Blood Pressure Test - cardiologychannel To measure blood pressure, the health care provider places a blood pressure cuff around the upper arm and inflates the cuff with air. Can a Simple Blood Pressure Test Diagnose Fibromyalgia? Can a Simple Blood Pressure Test Diagnose Fibromyalgia? MedlinePlus Medical Encyclopedia: Blood pressure High blood pressure increases the risk of heart failure, heart attack, stroke, and kidney failure. For people who have high blood pressure, this test is a Know Your Numbers! Week - Free blood pressure testing from the Know Your Numbers! (KYN) Week. From 10-16 September, the Blood Pressure Association is offering free blood pressure checks throughout the UK to raise Automatic Manual Blood Pressure Monitors,Omron,HEM,Wrist These devices perform the blood pressure test procedure automatically at the press of a button. This type of monitor inflates at the touch of a button. How Is Blood Pressure Tested? Guide to Lowering HBP To test your blood pressure, your doctor will use a familiar device with a long name. It is called a sphygmomanometer (pronounced sfigâ™-mo-ma-nom-e-ter), What Are High Blood Pressure and Prehypertension? Both numbers in a blood pressure test are important, but for people who are 50 or older, systolic pressure gives the most accurate diagnosis of high blood Home Blood Pressure Test A home blood pressure test allows you to keep track of your blood pressure at home. Blood pressure is a measure of the force of blood inside an artery. Blood Pressure Testing and Measurement The only way to find out if you have high blood pressure is to have your blood pressure checked. Your doctor or another qualified health professional should Test Your High Blood Pressure IQ With This Quiz Take this simple quiz to test your knowledge of high blood pressure. |
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