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: Things You Can Do to Help Lower Yours Information about lowering your blood pressure from the American Academy of Family Physicians. The second number is the diastolic blood pressure. Using Diet to Lower Your Blood Pressure The American Heart Association Nutrition Committee estimates that even a small reduction of just two points in diastolic blood pressure could lower a InteliHealth: Lower Your Blood Pressure Naturally Try these six natural methods to reduce your high blood The second number refers to your diastolic blood pressure. Does lowering diastolic BP to less than 90 mm Hg decrease Although lowering diastolic blood pressure (DBP) is associated with reduced cardiovascular events, systolic blood pressure (SBP) is a more robust predictor High Blood Pressure: Heart and Blood Vessel Disorders: Merck Infants and children normally have much lower blood pressure than adults. .. Doctors try to avoid decreasing diastolic blood pressure below 65, Systolic -- Not Diastolic -- Blood-Pressure Reading Should Define Traditionally, diastolic blood pressure, the second or lower number, was thought to be more important. Joseph Izzo, M.D., professor of medicine and Blood Pressure Hypertension Systolic Diastolic For many years physicians have concentrated on treating hypertension or high blood pressure by trying to lower the diastolic pressure. Diastolic pressure is What Are High Blood Pressure and Prehypertension? Your Guide to Lowering Blood Pressure, NHLBI Logo The higher the diastolic blood pressure the greater the risk for heart attacks, strokes and kidney What Is Blood Pressure? Guide to Lowering HBP Your Guide to Lowering Blood Pressure, NHLBI Logo Normal blood pressure is less than 120 mmHg systolic and less than 80 mmHg diastolic. Diastolic Blood Pressure Control: How Low Is Too Low? It has been further demonstrated that lowering systolic blood pressure (SBP) as well diastolic blood pressure (DBP) confers benefit.1 In the late 1970s, How To Lower Diastolic Blood Pressure, Safely? In this case the diastolic blood pressure is 80, and the systolic number is 120. A lower diastolic blood pressure is preferable as the higher that number |
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