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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Low Blood Pressure Information - Causes Of Low Blood Pressure Here is presented information about low blood pressure (bp), its causes and effects. University of Illinois Medical Center:Health Library Avoiding medications known to cause low blood pressure can prevent cases due to In most cases, treating the cause will correct the low blood pressure. Hypotension - Wikipedia, the free encyclopedia Low blood pressure is sometimes associated with: (Most of these are related to causes rather than effects of hypotension.) How Is Hypotension Treated? Any person with blood pressure low enough to cause symptoms should immediately sit or lie down, with the feet up above the level of the heart. Low blood pressure treatment, Low blood pressure causes and symptoms Low Blood Pressure, Complete information regarding causes, symptoms, diet and home remedies for Low Blood Pressure. Blood Pressure Guide When BP is low, there is not sufficient flow of blood to deliver enough Low Blood Pressure: An Overview · What Is The Cause Of High Blood Pressure All about low blood pressure Blood pressure is determined by 3 main factors. Find out what causes low blood pressure and what you can do about it. MedlinePlus: Low Blood Pressure Some people may experience symptoms of low pressure when standing up too quickly. Low blood pressure is a problem only if it causes dizziness, Symptoms of Low Blood Pressure Read on to know more about various symptoms and causes of low blood pressureā¦ Symptoms of Low Blood Pressure. Low Blood Pressure Symptoms - What are the Symptoms of Low Blood Low blood pressure, also known as hypotension, has several clear and easily identified symtpoms. These include fainting, dizziness, and changes in mental Low Blood Pressure Causes - Causes of Hypotension - What makes There are many potential causes of low blood pressure. They range in severity from mild to severe and may include things like medication side effects, Low Blood Pressure (Hypotension) Causes, Symptoms, Diagnosis, and Low blood pressure (hypotension) is pressure that is so low that it causes symptoms or signs due to the low flow of blood through the arteries and veins. Low Blood Pressure The most important cause of low blood pressure is faulty nutrition .It makes the tissues forming the walls of the blood vessels over relaxed, and flabby or Your High Blood Pressure Questions Answered ā Low Blood Pressure There is no specific number at which blood pressure is considered too low. Most doctors consider chronically low blood pressure dangerous only if it causes Low Blood Pressure This occurs when the pressure on the blood vessel walls falls below normal limits. Low blood pressure that does not cause symptoms is generally considered Low blood pressure (hypotension): Causes - MayoClinic.com Many drugs can cause low blood pressure, including diuretics and other drugs that treat high blood pressure; heart medications such as beta blockers; Introduction: Low Blood Pressure: Merck Manual Home Edition Various disorders and drugs can cause the compensatory mechanisms to malfunction, and low blood pressure may result. For example, cardiac output may be Low blood pressure - WebMD But low blood pressure can be a sign of an underlying problem -- especially in the elderly -- where it may cause inadequate blood flow to the heart, brain, Low blood pressure At this time, it was thought that low blood pressure was a major cause of However, there is no evidence that low blood pressure causes either of these |
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