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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Heart docs redefine cholesterol, blood pressure norms Heart docs redefine cholesterol, blood pressure norms Our `good', or HDL-cholesterol count is apparently lower than that of our Western peers, Learn Transcendental Meditation. Benefits for Health: High Blood Furthermore, the long-term TM practitioners had lower blood pressure than with national norms, people practicing the TM technique generally have lower Sphygmomanometer gauge and method of use for blood pressure In an apparatus for measuring blood pressure, a sphygmomanometer gauge for indicating pressure norms for subsequent comparison purposes during the blood Reference ranges for blood pressure in preschool Australians range for blood pressure in children identifies cases of â˜high .. could account for our lower diastolic blood pressure norms. Transcendental Meditation® Findings: Improved cardiovascular health: lower systolic blood pressure compared to norms for age. Effect more pronounced in long-term meditators. ScienceDirect - Seminars in Fetal and Neonatal Medicine : Blood Hypotension (i.e. lower-than-expected blood pressure) frequently, .. Blood pressure norms are based on statistically defined gestational and postnatal Rate of change of blood pressure in premature and full term prematures 10, 11, the Task Force diastolic norms show. slightly lower or unchanged mean diastolic blood pressure. at 4-6 months 1. Noninvasive 24-Hour Ambulatory Blood Pressure Monitoring Thus, clinicians should not use office blood pressure norms when evaluating . Overaggressive attempts to lower blood pressure in the absence of careful Systolic Blood Pressure and Long-Term Practice of the variable, and sex and age group as the. independent variables. The subjects. showed a significantly lower systolic. blood pressure than the norm, i.e., the Blood pressure standards for very low birthweight infants during Blood pressure correlated linearly with birthweight and gestation. Comparison with available standards showed that infants weighing under 800 g had lower SouthCoastToday.com: What's a 'good' blood pressure? Norms are We take blood pressure medicine. I tried to maintain a pressure close to 120/80. What's a 'good' blood pressure? Norms are lower than they used to be |
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