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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Reference values for ambulatory blood pressure and self-measured Currently, an average daytime blood pressure of less that 135 mmHg systolic and less than 85 mmHg diastolic is generally considered to be normal, Blood pressure normal? Maybe now it isnâ™t. What was classified as normal or high-normal blood pressure (a systolic pressure action before the blood pressure climbs any higher - and into the range Go Ask Alice!: Normal blood pressure In a healthy young adult the normal systolic pressure ranges from 90 to 139, and the normal diastolic pressure ranges from 60 to 89. High blood pressure can IngentaConnect Normal values of blood pressure self-measurement in In this study we reevaluated data from our Dubendorf study to determine self-measured blood pressure values corresponding to optimal and normal office blood What Is Normal Blood Pressure? Medical guidelines state that a normal blood pressure for most adults is less than 120/80 mm Hg. Drug Ranges for the four blood pressure categories Blood Pressure Chart - Normal Blood Pressure Range Normal blood pressure range chart, using a blood pressure monitor. Blood pressure - Wikipedia, the free encyclopedia Arterial blood pressure (BP) is most accurately measured invasively. . In children the observed normal ranges are lower; in the elderly, they are often 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. DataMontage Example - Blood Pressure Reference Values and Ranges DataMontage Example. Blood Pressure Reference Values, Ranges, Meds. What is blood pressure? If you are being treated for high blood pressure, you still have high blood pressure even if you have repeated readings in the normal range. Le Magazine, May 2005 - Report: Warning! Normal Blood Pressure May Blood pressure fluctuates widely, even in people with normal levels. People without high blood pressure will fluctuate into clearly abnormal ranges during |
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