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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BMJ BestTreatments :: Conditions :: High blood pressure :: Risk Certain things increase your likelihood of getting high blood pressure. Doctors call these risk factors. The main ones are discussed below. Blood Pressure Blood Pressure And Other Risk Factors. Blood pressure is always taken before . If the arm is too high the blood pressure will be artificially low and if Long Hours Up High Blood Pressure Risk The more hours you work, the greater your risk of high blood pressure. hours are 29% more likely to have this heart diseaseheart disease risk factor. High blood pressure (hypertension) - Prevention of risk factors High blood pressure affects one in five Canadians. It is the number one risk factor for stroke and a major risk factor for heart disease, NIHSeniorHealth: High Blood Pressure - Risk Factors and Prevention High Blood Pressure. Risk Factors and Prevention. Photo of a man reading a newspaper. - Click to enlarge in new window. Click image to enlarge MedlinePlus Medical Encyclopedia: Hypertension Many factors can affect blood pressure, including how much water and salt you You have a higher risk of high blood pressure if you have a family history High Blood Pressure A New Risk Factor For Kidney Rejection New research shows that high blood pressure plays an important role during acute rejection of transplanted kidneys. High blood pressure - hypertension symptoms, cause, treatment and risk People with high blood pressure have an increased risk of major illnesses including: The drugs you are prescribed will depend on a number of factors, High Blood Pressure - Risk Factors for High Blood Pressure High blood pressure is an important cause of heart attacks, strokes and kidney disease. Learn about the most common high blood pressure risk factors. Top 10 High Blood Pressure Risk Factors An important step in understanding and evaluating your risk of developing high blood pressure is to know what elements contribute to this risk. Other risk factors for high blood pressure High blood pressure is the main risk factor for stroke and one of the major risk factors for heart attack. A risk factors is something that increases your High blood pressure (hypertension) Anyone can suffer from high blood pressure, but certain factors can seriously aggravate hypertension and increase the risk of complications: Am I at Risk? However, we do know that several factors may contribute to high blood pressure and raise your risk for heart attack and stroke. Controllable risk factors High Blood Pressure, Factors That Contribute to Risk Factors That Can't Be Controlled. Heredity. People whose parents or other close blood relatives have high blood pressure are more likely to develop it Risk Factors | High Blood Pressure What is blood pressure? Blood pressure: How high is too high? What are the risk factors that contribute to high blood pressure? Can high blood pressure be High blood pressure (hypertension): Risk factors - MayoClinic.com High blood pressure has many risk factors. Some you can't control. Other risk factors for high blood pressure are within your control. Excess weight. High blood pressure: Are you at risk? - MayoClinic.com Prehypertension tends to get worse over time and, if you have high blood pressure risk factors, you could develop high blood pressure: |
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