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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Blood Pressure Monitoring at Home -- familydoctor.org Hypotension, or low blood pressure, happens when your systolic pressure is consistently (several blood pressure readings over several days) below 90--or 25 Blood Pressure A low blood pressure is desirable, apparently the lower the better. We do not recognize medically a blood pressure reading that is too low, except in cases Accurate blood pressure readings? - Yahoo! Answers Are blood pressure readings affected by wearing a are in doubt of a reading too high or low) You can take an accurate reading through a thin shirt, Low Blood Pressure Quiz A. Blood pressure reading of 100/80 mm Hg or lower B. Blood pressure low A heart rate that is too slow can be corrected by surgically implanting a Steeles.com Taking Blood Pressure Correctly Though the procedure seems simple, taking a blood pressure reading with a cuff is cuff may be too big, leading to falsely low blood pressure readings. Is Your Blood Pressure Too High? Although "optimal blood pressure" is defined as a blood pressure of less than 120/80 mm Hg, unusually low readings should also be evaluated. Low Blood Pressure (Hypotension) Most people assume that you canâ™t be too thin, too rich, or have blood pressure that is too low. Many people with low blood pressure are athletes in prime Blood pressure - Wikipedia, the free encyclopedia For blood pressure readings taken with a home monitoring device to be accurate, they should be . Blood pressure that is too low is known as hypotension. How to measure blood pressure correctly and get accurate blood Blood pressure readings taken at home are often lower than those taken at a . may be falsely high and if it is too big the reading may be falsely low. Going too low with blood pressure? Going too low with blood pressure? They keep lowering the bar for blood pressure. that grouped the patients by their average blood pressure readings. Blood Pressure, A Doctor's Practical Guide With Insider's Tips Does low blood pressure cause symptoms? Or is it another silent killer? Your blood pressure readings may be too high but they might not be as bad as MedlinePlus: Low Blood Pressure If your blood pressure reading is 90/60 or lower, you have low blood Some people may experience symptoms of low pressure when standing up too quickly. Space Shuttle "Low Pressure" Pants Inspire New Diagnostic Tool For "Part of the reason might be we don't know how low they can go safely and we haven't Systolic -- Not Diastolic -- Blood-Pressure Reading Should Define Low Blood Pressure Within limits, the lower your blood pressure reading is, the better. In most people blood pressure isn't too low until it causes symptoms such as 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, Low blood pressure (hypotension): Causes - MayoClinic.com Some experts define low blood pressure as readings lower than 90 doctors often consider chronically low blood pressure too low only if it causes Blood Pressure Chart - Normal Blood Pressure Range Are your blood pressure readings within the normal blood pressure range? 60 - 40 - TOO LOW Blood Pressure 50 - 33 - DANGER Blood Pressure |
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