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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Heartpoint: High Blood Pressure Information If a personâ™s systolic blood pressure is ranging from 100-130 mm mercury, generally no treatment is necessary. But I canâ™t have high blood pressure! High Blood Pressure (Hypertension) - Patient UK For example, if you have a poor diet and change to a diet which is low-fat, low-salt, and high in fruit and vegetables, it can lower systolic blood pressure Isolated systolic high blood pressure - Yahoo! Health In isolated systolic high blood pressure (isolated systolic hypertension, or ISH), systolic blood pressure is elevated (above 140 mm Hg), but diastolic Hypertension or High Blood Pressure - cardiologychannel Hypertension, or high blood pressure, is the chronic state of elevated pressure in the arteries. A person with systolic and/or diastolic blood pressures What is blood pressure? (Top number), Diastolic (Bottom number). Normal, Less than 120, Less than 80. Prehypertension, 120-139, 80-89. High Blood Pressure, Systolic, Diastolic Publications This problem is called isolated systolic hypertension. Isolated systolic hypertension is the most common form of high blood pressure in older people. Isolated Systolic Hypertension - Isolated Systolic High Blood Pressure Isolated systolic hypertension most often occurs in the elderly and is caused by the hardening of the arteries (arteriosclerosis). Because the arteries are High blood pressure (hypertension) Around 10 million people in the UK have high blood pressure - that's one in five of In general terms, people with a systolic blood pressure consistently Blood Pressure A systolic pressure of 120 to 139 mmHg or a diastolic pressure of 80 to 89 High blood pressure usually has no symptoms. In fact, many people have high High Blood Pressure: Heart and Blood Vessel Disorders: Merck High blood pressure is defined as a systolic pressure at rest that averages 140 mm Hg or more, a diastolic pressure at rest that averages 90 mm Hg or more, What Is High Blood Pressure? High blood pressure (or hypertension) is defined in an adult as a blood pressure greater than or equal to 140 mm Hg systolic pressure or greater than or Treating Systolic High Blood Pressure In Older Persons Is Beneficial Treatment to lower systolic high blood pressure in older persons is associated with substantial reduction of stroke and other cardiovascular diseases, National High Blood Pressure Education Month Systolic High Blood Pressure. Bullet Icon What Is Systolic High Blood Pressure? High blood pressure is 140 and higher for systolic. Hypertension - Wikipedia, the free encyclopedia Secondary hypertension indicates that the high blood pressure is a result of . These typically only surface with a systolic blood pressure over 240 mmHg Blood pressure - Wikipedia, the free encyclopedia When blood flow is nil (cuff pressure exceeding systolic pressure) or .. but nowadays it is recognised that both high systolic pressure and high pulse High blood pressure (hypertension) - causes, treatments and Isolated systolic high blood pressure; White coat high blood pressure; Borderline high blood pressure. What causes high blood pressure? High Blood Pressure - Systolic High Blood Pressure - Hypertension Questions and answers about systolic high blood pressure. What Is High Blood Pressure? Category, Systolic (top number), Diastolic (bottom number). Normal, Less than 120, Less than 80. Prehypertension, 120â“139, 80â“89. High blood pressure What Are High Blood Pressure and Prehypertension? Both numbers in a blood pressure test are important, but for people who are 50 or older, systolic pressure gives the most accurate diagnosis of high blood |
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