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: Things You Can Do to Help Lower Yours Many different types of medicine can be used to treat high blood pressure (see the box below). These are called antihypertensive medicines. Types of Blood Pressure Medications: Guide to Lowering HBP High Blood Pressure Topics:. ACE Inhibitors, African Americans, Alcohol The ACE inhibitors cause the vessels to relax and blood pressure goes down. High Blood Pressure (Hypertension) It might seem odd that kids can have high blood pressure, high blood pressure and experiences any of these symptoms, seek medical care immediately. High Blood Pressure Center - MayoClinic.com High Blood Pressure Center â” medications, low-sodium diet, other strategies to lower blood 1998-2008 Mayo Foundation for Medical Education and Research. Lotrel.com Lotrel.com. High blood pressure (hypertension) - MayoClinic.com High blood pressure â” Comprehensive overview covers symptoms, treatment and logo are trademarks of Mayo Foundation for Medical Education and Research. What Is High Blood Pressure Medicine? This Answers by Heart sheet describes how medication can be used in the management of high blood pressure, the types of drugs and their side effects and High Blood Pressure (Hypertension) and Related Information on High blood pressure (hypertension) means high pressure or tension in the arteries. The arteries are the vessels that carry blood from the pumping heart to MedlinePlus: High Blood Pressure (Mayo Foundation for Medical Education and Research); Secondary High Blood Pressure: When Another Condition Causes Hypertension(Mayo Foundation for Medical Taking Medication for High Blood Pressure Find out about high blood pressure medications. Here are some drugs used to treat high blood pressure. What Is High Blood Pressure Medicine? High blood pressure (hypertension) - causes, treatments and High Blood Pressure: Medical information about hypertension, its treatment, therapies and prevention. |
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