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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What Is Normal Blood Pressure? Look at a chart of blood pressure readings to see if your blood pressure is BP Success Zone Program to help people lower their blood pressure numbers. Measuring Blood Pressure, what the numbers mean. Everyone should know what their blood pressure is. Think of it as part of your body's MOT and a number you know, in the same way that you know how much you What do the numbers mean in a blood pressure reading? Scanning the table of contents, our pulse quickened as we noted a definition of blood pressure and detail on the meaning of the two numbers in a blood Go Ask Alice!: Blood Pressure Numbers Alice, What does a large split in blood pressure numbers mean? For example, a 26 year old male with a reading of 143/73. Á” Signed, Pumping. Blood Pressure Readings - What They Mean Find out how the numbers in your blood pressure readings measure your risk Your top blood pressure number is often a stronger indicator of how at risk Are Your Blood Pressure Numbers Low Enough? Enter your most recent blood pressure numbers and get an evaluation based on the new medical guidelines. Translating Blood Pressure Numbers It is crucial to ÁœKnow Your NumbersÁ« with respect to Blood Pressure. Life-threatening complications can develop over a course of years when hypertension Blood Pressure What do blood pressure numbers indicate? The higher (systolic) number represents the pressure while the heart contracts to pump blood to the body. About High Blood Pressure What do blood pressure numbers indicate? The higher (systolic) number represents the pressure when the heart is beating. The lower (diastolic) number What is blood pressure? Blood pressure is always given as these two numbers, the systolic and diastolic pressures. Both are important. Usually they are written one above or before |
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