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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Preeclampsia and High Blood Pressure During Pregnancy - Topic Preeclampsia is defined as the new onset of high blood pressure over 140/90 millimeters of mercury (mm Hg) after 20 weeks of pregnancy, usually with High Blood Pressure During Pregnancy -- familydoctor.org Information about high blood pressure during pregnancy from the American Academy of Family Physicians. Pregnancy-induced high blood pressure (pre-eclampsia) Up to 1 in 10 pregnant women develop raised blood pressure accompanied by the appearance of protein in the urine (proteinuria) and retention of excessive High Blood Pressure During Pregnancy - March of Dimes Chronic hypertension is high blood pressure that is diagnosed before pregnancy or before the 20th week of pregnancy. This form of hypertension does not go Pregnancy: When you have high blood pressure - MayoClinic.com High blood pressure and pregnancy â” Here's what you need to know. NHBPEP Report on High Blood Pressure in Pregnancy: A Summary for The National High Blood Pressure Education Program's Working Group on High Blood Pressure in Pregnancy recently issued a report implicating hypertension as Hypertension in Pregnancy There are three distinct types of high blood pressure that can complicate pregnancy. One type, not pregnancy-related, is called chronic hypertension, High Blood Pressure of Pregnancy - Patient UK If you are pregnant you should have regular blood pressure checks. High blood pressure (hypertension) commonly develops during pregnancy. Pregnancy How Common Are High Blood Pressure and Preeclampsia in Pregnancy? How Can Women with High Blood Pressure Prevent Problems During Pregnancy? High Blood Pressure in Pregnancy Although many pregnant women with high blood pressure have healthy babies without serious problems, high blood pressure can be dangerous for both the mother ACOG Education Pamphlet AP034 -- High Blood Pressure During Pregnancy If you are pregnant and have any of the risk factors that may lead to high blood pressure, you may need special care. This pamphlet will explain: |
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