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 - information and help about hypertension High blood pressure: Lifestyle changes are an essential part of controlling this condition. Free blood pressure machines: Are they accurate? Amazon.com: Omron HEM-780 Automatic Blood Pressure Monitor with Of the countless ailments that rack the human machine, high blood pressure is one of the easiest to prevent and one of the most responsive to treatment. Amazon.com: Controlling High Blood Pressure the Natural Way: Books Information about high blood pressure. These day automatic, or partly automatic, digital machines are used to measure blood pressure. High Blood Pressure (Hypertension) - Symptoms, Causes, Diagnosis This machine may help the doctor find out whether a patient has true high blood pressure or what is known as "white-coat hypertension. High Blood Pressure (Hypertension) - Texas Heart Institute Heart Medinfo's patient information on hypertension, or high blood pressure, a condition in These days an electronic blood pressure machine, which takes the Medinfo: Hypertension (high blood pressure) White-Coat Hypertension: blood pressure reading is high in your doctor's office . (But one glance tells you that it's essentially the identical machine. High Blood Pressure: Using an Ambulatory Blood Pressure Monitor They consistently score high on excellent value for money and high quality service. They stock blood pressure machines that the British Hypertension Society Blood Pressure Monitors: advice on accurate blood pressure monitors If you have high blood pressure, how often you need to be measured will depend Your blood pressure can be measured either by using a machine called a Measuring Blood Pressure, what the numbers mean. If your blood pressure is high on the third reading, even borderline, have it checked by another machine that you know is accurate (for example, Blood Pressure Monitoring at Home -- familydoctor.org Another word for high blood pressure is "hypertension. This machine lets your doctor find out what your blood pressure was every 15 to 30 minutes of a |
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