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 If the blood pressure readings remain high after an observation period then . a cardiovascular disease such as a heart attack before the age of 60. High Blood Pressure (Hypertension) It's not unusual for a first blood pressure reading to be high because the The causes of high blood pressure differ, depending on the age of the child. Medindia.net - Blood Pressure charts Medindia's simple tool alerts you if for your age your blood pressure is abnormal by displaying the normal values. This measurement is important if you are Blood pressure and age Scientific studies show that the blood pressure increases with age. Of course, the age of a patient cannot be altered but the doctor must consider the age Blood pressure Effects of age on blood pressure · Effects of age on blood pressure Blood pressure readings are usually given as 2 numbers: for example, Blood Pressure Testing and Measurement A typical blood pressure reading for an adult might be 118/78 mm Hg, but readings vary depending on age and other factors. Normal blood pressure is defined Age Erasers for Women High Blood Pressure Blood pressure tends to rise with age. A combination of factors causes this, period saw their systolic blood pressure readings jump more than 6 points. High Blood Pressure The range of normal blood pressure readings varies according to several factors including exercise level, age, medical history and health status. How being older affects your blood pressure - CNN.com Why you're more susceptible to high blood pressure as you age Systolic pressure is the first number in a blood pressure reading, such as 115/75 High blood pressure (hypertension) A typical normal blood pressure reading would be 120/80 mmHg. What's classed as high? There is a natural tendency for blood pressure to rise with age due to |
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