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 (Hypotension) Causes, Symptoms, Diagnosis, and Learn about low blood pressure (hypotension) is blood pressure below normal. When the flow of blood is too low to deliver enough oxygen and nutrients to Can Blood Pressure Be Too Low? Can Blood Pressure Be Too Low? Low blood pressure (hypotension) generally refers to numbers less than 100/60. In most people low blood pressure isn't cause Low Blood Pressure (hypotension) Can blood pressure be too low? Optimal blood pressure is generally defined as 120/80. Low blood pressure (hypotension) generally refers to numbers less than Low blood pressure (hypotension): Causes - MayoClinic.com For that reason, doctors often consider chronically low blood pressure too low only if it causes noticeable symptoms. On the other hand, a sudden fall in Your High Blood Pressure Questions Answered ┠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 In most people blood pressure isn't too low until it causes symptoms such as In certain conditions or disease states, blood pressure can become too low. Introduction: Low Blood Pressure: Merck Manual Home Edition If blood pressure is too high, it can damage a blood vessel and even rupture it, causing bleeding or other complications. If blood pressure is too low, Blood pressure - Wikipedia, the free encyclopedia It is essential that the cuff size is correct: undersized cuffs may yield too high a pressure, whereas oversized cuffs yields too low a pressure. When blood Blood Pressure Chart - Normal Blood Pressure Range 120 - 80 - NORMAL Blood Pressure 110 - 75 - Low Normal 90 - 60 - BORDERLINE LOW 60 - 40 - TOO LOW Blood Pressure 50 - 33 - DANGER Blood Pressure Heartpoint: High Blood Pressure Information Your blood pressure must be measured to know whether it is high. . You can then get your pressure to where it's actually too low. TREATING HIGH BLOOD PRESSURE: HOW LOW IS TOO LOW? © Priory Lodge To what level should blood pressure be lowered while optimizing anti-hypertensive therapy? Business Matters: Blood pressure too low? Think billboards! Blood pressure too low? Think billboards! If there is anyone out there who doesn't have an opinion about billboards, please let me know. 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, Low Blood Pressure or Hypotension Symptoms, Cure, Cause, Treatment When blood pressure is too low, the first organ to malfunction is usually the brain because it is located at the top of the body and blood has to fight Abnormal Blood Pressure - Blood Pressure Too High - Blood Pressure Measuring blood pressure at home leads to questions about odd readings. What If Blood Pressure is Too High or Too Low? From Rod Brouhard, Blood Pressure | Blood Low Pressure Too Monitor your Blood Low Pressure Too results to stay aware of your heart's health. Be informed to manage your health with accurate, easy home testing University of Illinois Medical Center:Health Library medications, such as those used to treat high blood pressure. In this case, the medication may work too well and make the blood pressure too low. Low blood pressure Many people were quite wrongly treated for low blood pressure in the UK in the things we do that increase our blood pressure, like eating too much salt, Low blood pressure affects fetus too -- 329 (7478): 0 -- BMJ Low blood pressure affects fetus too. Both low and high maternal diastolic blood pressures during pregnancy are associated with lower birth weight of |
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