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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High Blood Pressure in Children Answers to your questions about high blood pressure and children and more! Recent studies have found that the average blood pressure of American BBC NEWS | Health | Child blood pressure warning In 1988 to 1994 the children's average systolic blood pressure was 104.6mm Hg (millimetres of mercury). This rose to 106 mm Hg in 1999 to 2000. How Common is High Blood Pressure in Children - Incidence of Studies tracking the rate of obesity among children, along with average blood pressure, clearly show that the two increase together. Average blood pressure levels on rise among American children Systolic and diastolic blood pressure levels for children and teenagers have risen substantially since 1988, according to a new study supported by the Rising high blood pressure in children, heart disease risk - BUPA The children's average blood pressure does not suggest that they will have high blood pressure soon. However, blood pressure rises with age and the fact Kids' High Blood Pressure on the Rise High blood pressure has become more common in US kids and teens as childhood obesity rises, say experts from Morehouse School of Medicine. Kids' Blood Pressure On the Rise - High Blood Pressure May 5, 2004 -- The average blood pressure of children and adolescents in the US Average Blood Pressure Levels On Rise Among American Children/Teenagers Blood Pressure Average Pulse and Blood Pressure in Normal Children The above graph shows the average rested blood pressure to be approximately 118/74, correlating with NIH/NHLBI News Release--Average Blood Pressure Levels On Rise In 1988-94, the childrenâ™s average systolic blood pressure was 104.6 mm Hg and their average diastolic pressure was 58.4 mm Hg. In 1999-2000, the childrenâ™s High Blood Pressure (Hypertension) In children, high blood pressure is defined as a blood pressure greater than the 95th percentile for their age, height, and gender (in other words, Child Blood Pressure - DrGreene.com - caring for the next generation Taller children have higher normal blood pressures than shorter children of the same age. For an average 5 year old girl, a normal blood pressure would be |
| average blood pressure for children |
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