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: Are you at risk? - MayoClinic.com However, certain medical conditions can cause high blood pressure. This type of high blood Fibromuscular dysplasia: A cause of high blood pressure? Causes and remedies for high blood pressure - FamilyEducation.com Find information on what causes high blood pressure and how to control it. two numbers when checking your blood pressure, systolic and diastolic. Blood Pressure The lower (diastolic) number represents the pressure when the heart relaxes Certain diseases, such as kidney disease, can cause high blood pressure. Publications Thatâ™s because high blood pressure does not cause symptoms that you can see or feel. This is the diastolic pressure. If your blood pressure is normal, What is blood pressure? In many people with high blood pressure, a single specific cause is not known. Note: When systolic and diastolic blood pressures fall into different Blood Pressure Hypertension Systolic Diastolic Diastolic pressure is the lower number in a blood pressure reading. High blood pressure is the leading cause of many life threatening or disabling DHDSP - About High Blood Pressure A person with a high diastolic pressure but a normal systolic pressure will be . Also, diseases of the kidney can be a cause of high blood pressure. High Blood Pressure (Hypertension) - Patient UK For example, smoking and high blood pressure cause a greater risk to health than it is estimated that reducing a high diastolic blood pressure by 6 mmHg High Blood Pressure: Heart and Blood Vessel Disorders: Merck Blood pressure is written as systolic pressure/diastolic pressureâ”for . Many kidney disorders can cause high blood pressure, because the kidneys are Blood pressure - Wikipedia, the free encyclopedia In the past, most attention was paid to diastolic pressure; but nowadays it is recognised that both high systolic pressure and high pulse pressure (the High Blood Pressure (Hypertension) - Symptoms, Causes, Diagnosis What makes high blood pressure important is that initially it may cause no systolic and diastolic blood pressure after examining the blood pressure of High blood pressure - hypertension symptoms, cause, treatment and risk The bottom figure - the diastolic blood pressure - is the pressure between heart Although the exact cause of high blood pressure isn't fully understood, High blood pressure High diastolic pressure is a strong predictor of heart attack and stroke in .. High blood pressure causes 30% of all cases of end-stage kidney disease Heartpoint: High Blood Pressure Information The majority of times, there is no clear cause which can be identified. In a few patients (approximately 2%), high blood pressure may be traced to other High Blood Pressure - hypertension, symptoms, causes, beta High blood pressure (also called hypertension) information relating to symptoms, causes, diastolic pressure, systolic pressure, primary hypertension, What Are High Blood Pressure and Prehypertension? Diastolic pressure does not need to be high for you to have high blood As with other types of high blood pressure, ISH often causes no symptoms. What Is High Blood Pressure? When high blood pressure is not found and treated, it can cause: and the diastolic pressure is the second or bottom number (for example, 120/80). High blood pressure (hypertension) The systolic pressure is always listed first, then the diastolic pressure. For more than 90 per cent of people with high blood pressure, the cause is High blood pressure (hypertension) - causes, treatments and What are the causes of secondary high blood pressure? An elevation of the systolic and/or diastolic blood pressure increases the risk of developing |
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