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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How to take your blood pressure correctly: tips and advice Record the results including day, time, arm position. Always consult your doctor when you do home blood pressure readings and have your equipment tested at Gametrailers.com - kcyakiyaki's GamePad - Viewing Blog "Marked change in blood pressure during sleep by turning the position may up perpendicular to your bed with your arms and legs in various positions? Chemistry Bookstore (USA) - Omron HEM-780 Automatic Blood Pressure To take an accurate reading, first position the green marker directly over By keeping track of your home blood pressure readings, you can provide your Yoga helps you lower blood pressure Article - Yoga Article People who suffer from high blood pressure need to lower blood pressure in order to involve stretching and moving the body into various positions. Medem: Medical Library: Essential Guide to Hypertension: Accurate One of the most overlooked causes of inaccurate blood pressure readings is the size Often, doctors measure blood pressure in various body positions to Body position and blood pressure measurement in patients with arm position on the BP readings in diabetic patients. .. Changes in blood pressure in the lying and sitting positions in CardioValens.com : Matters of the Heart A patient may be asked to hold various positions (e.g. lying, reclining, sitting, Episodic high blood pressure : Blood pressure readings that alternate Method and apparatus for monitoring leg blood pressure of an 3 and 4 when the patient's calf, thigh and side are in various positions; the frequency to a pressure reading and, when this pressure reading is Method and device for monitoring blood pressure - US Patent 6443906 Thus, the wrist position cannot change. In practice, it is difficult to keep .. Since blood pressure readings are stored in the watch memory module with Blood pressure Blood pressure readings are usually given as 2 numbers: for example, by moving the individual's head to various positions or by tilt-table testing. Effects of arm position and support on blood-pressure readings. The effect of changes in arm position and of arm support on blood-pressure readings was assessed in 240 hypertensive outpatients with the arm in various |
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