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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Blood Pressure Monitoring at Home -- familydoctor.org Normal blood pressure is 120/80 or lower. High blood pressure is 140/90 or higher. If your blood pressure is between 120/80 and 140/90, you have something High Blood Pressure (Hypertension) - Patient UK High blood pressure is a blood pressure that is 140/90 mmHg or above each time it is . A drug to lower blood pressure if it is 140/90 mmHg or higher. 90% of Americans Headed for High Blood Pressure 3/16/02 The Framingham study found that unless lifestyle changes are implemented, most Americans will develop hypertension. Learn what you can do to treat and 145/90 blood pressure in a 30 year-old >> Medical Questions I felt terribly bad yesterday afternoon I thought my had was going to explode and I even vomited so my friend told me I should see what my blood pressure is What Is High Blood Pressure? High blood pressure is a blood pressure reading of 140/90 mmHg or higher. High blood pressure. Stage 1, 140â“159, 90â“99 Blood Pressure Chart - Normal Blood Pressure Range 210 - 120 - Stage 4 High Blood Pressure 180 - 110 - Stage 3 High Blood Pressure 160 - 100 - Stage 2 High Blood Pressure 140 - 90 - Stage 1 High Blood High Blood Pressure (Hypertension)-Overview Adults should have a blood pressure of less than 120/80. High blood pressure is 140/90 or higher. Many people fall into the category in between, Amazon.com: Mark of Fitness MF-90 Wrist Blood Pressure/Body Fat Amazon.com: Mark of Fitness MF-90 Wrist Blood Pressure/Body Fat Monitor: Health & Personal Care. High Blood Pressure High blood pressure, or hypertension, is defined in an adult as a systolic pressure of 140 mm Hg or higher and/or a diastolic pressure of 90 mm Hg or higher What is blood pressure? When the level stays high, 140/90 or higher, you have high blood pressure. With high blood pressure, the heart works harder, your arteries take a beating, Measuring Blood Pressure, what the numbers mean. The top number can be anywhere from 90 to 240 and the bottom number can be anywhere from 60 to 140. Blood pressure is measured in millimetres of mercury, |
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