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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Know Your Numbers! Week - Free blood pressure testing from the Week is the nation's biggest annual blood pressure testing and awareness event. What is high blood pressure and why is it important? National High Blood Pressure Education Month To find out if you have ISH â” or any type of high blood pressure â” see your doctor and have a blood pressure test. The test is quick and painless. Monitoring your blood pressure at home - Home Blood Pressure Test - Test Your Knowledge. Taking my blood pressure at home helps diagnose whether I have high blood pressure and helps monitor the effects of my medication. High Blood Pressure (Hypertension) - Patient UK Having high blood pressure is one of several 'risk factors' that can increase your chance of A blood test to check that your kidneys are working fine, BMJ BestTreatments :: Conditions :: High blood pressure :: How is The only way to know whether you have high blood pressure is to have it measured. You're probably familiar with the simple blood pressure test. Test Your High Blood Pressure IQ With This Quiz Take this simple quiz to test your knowledge of high blood pressure. Home Blood Pressure Test A home blood pressure test allows you to keep track of your blood pressure at home. Common Treatments for Hypertension/High Blood Pressure High Blood Pressure (Hypertension)-Exams and Tests Screening tests and programs for high blood pressure vary widely in reliability. Results from automated blood pressure testing, such as you might do at a Home Blood Pressure Test - Yahoo! Health Severe high blood pressure can be dangerous to both you and your baby. If you have chronic high . There are no risks or complications from this test. 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 Blood Pressure Testing and Measurement Blood Pressure Testing and Measurement AHA Recommendation. The only way to find out if you have high blood pressure is to have your blood pressure checked. |
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