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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Ideals for reading blood pressure - Dateline Florida Dear P.M.: Blood pressure norms have changed. Normal blood pressure is one in which the first number is less than 120 and the second number is less than 80. The Primary Health Care Package for South Africa - a set of norms 4.1 All adults entering clinic have blood pressure measured routinely every five 4.3 At least two measurements of blood pressure are made at each of Norms for Fitness, Performance, and Health - Human Kinetics Part III: Health Norms Chapter 10. Cardiovascular Profiles. Blood Pressure; Maximal Heart Rate; Training Effects; Summary. Chapter 11. Lipid Profile Ask an Expert: Pediatric blood pressure norms Pediatric blood pressure norms. 05/17/1999 04:06PM. Question:. Can you direct me to a current chart of pediatric male and female blood pressure percentiles? HealthForums.com g Library > Q and A Archive : Blood pressure It's important to remember that blood pressure norms for children vary with sex, age and height. Here's a chart to give you an idea of what the NIH Blood pressure norms for healthy young adults: relation to sex Blood pressure norms are presented for 1522 white, healthy, nonsmoking, normotensive 18 to 22-year-old men and women as a function of age and parental Blood pressure centiles for Great Britain -- Jackson et al. 92 (4 Conclusions: These centiles increase our knowledge of blood pressure norms in contemporary British children and young people. High blood pressure for age High Blood Pressure (Hypertension) It might seem odd that kids can have high blood pressure, your child's doctor will be able to compare your child's blood pressure with national norms. SouthCoastToday.com: What's a 'good' blood pressure? Norms are DEAR DR. DONOHUE: My roommates and I are in constant disagreement on the correct blood pressure we're supposed to maintain. We take blood pressure medicine. Ask the Dietitian - by Joanne Larsen MS RD LD - Salt & Sodium Got questions about Salt Intake and High Blood Pressure? her food should keep her sodium levels within norms which are 135 - 147 mEq / L in the US. Heart docs redefine cholesterol, blood pressure norms NEW DELHI, July 19: If your BP goes up each time you try to make sense of your blood pressure readings, or if your doctor's advice on cholesterol and diet |
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