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 (Hypertension) - Patient UK However, certain groups of people with blood pressure in this range are advised . a cardiovascular disease such as a heart attack before the age of 60. Men's Health - High Blood Pressure / Hypertension persons in their early to middle adult years; men in this age group have higher blood pressure more often than women in this age group. Blood Pressure Support Groups Blood Pressure Support Groups are run by people with high blood pressure for people with high blood pressure. By going to Group meetings you can find out Blood Pressure Hypertension Systolic Diastolic Additionally this large study indicated a poor level of awareness, treatment, and control of high blood pressure in all age groups. Science Project 2002 The purpose of this experiment was to compare the effect of exercise vs. rest on the blood pressure of different age groups. More Children On Chronic Medications For Blood Pressure For example, the number of males between 15 and 19 using a blood pressure drug increased by 15.4 percent even as the number of females in the age group Alzheimer's and Dementia : P3-131: Blood pressure and cognitive It is unclear whether the relation between blood pressure and later cognitive performance is similar across age groups. Objective: To examine the Blood Pressure and Length of Stay in Australia of Italian Blood pressure and age. Fig. 1 shows that Australians and Italians of. both sexes had higher SBP and DBP in successive. age groups. In all age groups SBP AGE, SEX AND SPECIES VARIATIONS ON BLOOD PRESSURE IN NORMAL RATS pressure ranges were compared in each of four age groups ranging from 110 to. 910 days old. These arbitrary blood pressure ranges were: Lothian Health and Life Survey 2002 The data in table 2.11 indicates a sudden small rise in high blood pressure not requiring drug treatment in the respondents from the 35-44 age group for |
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