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 | Blood Pressure Causes | Normal Blood Pressure Lifestyle And High Blood Pressure General use of blood pressure readings was made possible by the development of so-called 'indirect techniques', High blood pressure - hypertension symptoms, cause, treatment and risk This is so he or she can check that the high reading is an ongoing problem and not a one-off. You may also need some tests to see if high blood pressure is Healthy Hearts: Hypertension/High Blood Pressure - The Human Heart There is no "ideal" blood pressure reading. However, there is a range of for an extended period of time, you have high blood pressure, or hypertension. High Blood Pressure: Heart and Blood Vessel Disorders: Merck If the cuff is too small, the blood pressure reading is too high. The readings determine not only whether high blood pressure is present but also how High blood pressure - information and help about hypertension In order to be sure that you have high blood pressure, you will be asked to have readings taken several times. This is to make sure that you have High blood pressure (hypertension) A typical normal blood pressure reading would be 120/80 mmHg. What's classed as high? There is a natural tendency for blood pressure to rise with age due to High blood pressure (hypertension) - MayoClinic.com High blood pressure â” Comprehensive overview covers symptoms, treatment and prevention of hypertension. High Blood Pressure: Things You Can Do to Help Lower Yours Information about lowering your blood pressure from the American Academy of Family Physicians. WebMD Hypertension/High Blood Pressure Center - Find high blood Find in-depth high blood pressure and hypertension information including its causes, These are the current technical articles your doctor is reading. Blood pressure (high) Introduction - Health encyclopaedia - NHS Direct Persistent high blood pressure (hypertension), if untreated puts you at greater risk of having a To measure blood pressure, two readings are taken: Hypertension (High Blood Pressure) A borderline high systolic pressure of 120 to 139 or a diastolic pressure of 80 to 89 needs to be closely monitored. A blood pressure reading equal to or High Blood Pressure (Hypertension) - Symptoms, Causes, Diagnosis Consumer health resource center providing an overview of hypertension and its causes, symptoms and treatment. Natural Remedies for High Blood Pressure People can have high blood pressure for years without experiencing symptoms or knowing they have it. The upper or first number in a blood pressure reading High blood pressure (hypertension) - causes, treatments and High Blood Pressure: Medical information about hypertension, its treatment, High blood pressure - on eMedicineHealth; Read what your doctor is reading: Hypertension - Wikipedia, the free encyclopedia Secondary hypertension indicates that the high blood pressure is a result of (i.e. .. the many factors that influence blood pressure reading 14. Your Guide to Lowering High Blood Pressure, NHLBI This site, for people who want to learn about preventing and controlling high blood pressure. Based clinical guidelines and research studies, What Is High Blood Pressure? If you are being treated for high blood pressure and have repeated readings in the normal range, you still have high blood pressure. High Blood Pressure (Hypertension) - Patient UK A one-off blood pressure reading that is high does not mean that you have 'high blood pressure'. Your blood pressure varies throughout the day. What Is High Blood Pressure? Controlling high blood pressure is a lifelong commitment. Itâ™s easier when you have a plan. Start by reading our Top Ten Ways To Control High Blood Pressure |
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