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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High blood pressure (hypertension) - Prevention of risk factors Have your blood pressure checked regularly. High blood pressure often has no symptoms, so have yours checked at least once every two years by a healthcare Children should have blood pressure and cholesterol checked by age Children should have blood pressure and cholesterol checked by age of 5. Janice Hopkins Tanne New York. Because cardiovascular disease is the leading cause Blood Pressure Monitors: advice on accurate blood pressure monitors Independent advice about buying an accurate home blood pressure monitor. Visit their site to see where you can have you blood pressure checked for free. Regular Blood Pressure Monitoring is Important for Preventing Who should have their blood pressure checked, and how often should blood pressure checks be performed? Learn the answers to these questions and other Hypertension (High Blood Pressure) Most teens will have their blood pressure checked during an annual physical exam. Doctors recommend that older teens with normal blood pressure get their Video: How to monitor your own blood pressure - MayoClinic.com When it contracts, or beats, it sends a surge of blood through the vessels, increasing blood pressure. This is called systolic pressure. High Blood Pressure: Things You Can Do to Help Lower Yours Even in children, blood pressure should be checked occasionally, After age 21, have your blood pressure checked at least once every 2 years. NHLBI, CHD in Blacks, Prevent High Blood Pressure Your blood pressure should be checked by your health care provider at least once each You can have your blood pressure checked at your doctoris office, Common Misconceptions Learn more about getting your blood pressure checked. 2. Every time I go to the doctor, High blood pressure can only be detected by having it checked. Measuring Blood Pressure, what the numbers mean. This is why it is important to have your blood pressure checked regularly. Even if your blood pressure is 'normal', ie, below 140/90mmHg, Blood Pressure The only way to find out if you have high blood pressure is to have your blood pressure checked. Your doctor or other qualified health professional should |
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