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) High blood pressure in babies is usually caused by prematurity or problems with the kidneys or heart. In many cases when kids and teens have high blood National High Blood Pressure Education Month Help prevent and control high blood pressure using the education materials and activity Heart Healthy Recipes · Publications on High Blood Pressure Consumer Reports Health - Calcium Blockers CCBs are typically not prescribed as initial or first-step treatment in people with high blood pressure who have no other form of heart disease. High blood pressure and heart attack information from iVillage Read about high blood pressure, or hypertension, and heart attack risks at iVillage Total Health.com. Start With Your Heart Having high blood pressure is dangerous because it directly increases the risk of coronary heart disease, heart attack, and stroke. High Blood Pressure May Mask Potentially Deadly Heart Condition New research finds a relationship between increased blood pressure and decreased pain perception in a variety of circumstances, including among individuals Amazon.com: Heart Disease and High Blood Pressure (Getting Well Amazon.com: Heart Disease and High Blood Pressure (Getting Well Naturally): Books: Michael T. Nd Murray by Michael T. Nd Murray. High Blood Pressure and Heart Attack Blood pressure is the force or pressure of blood inside the arteries when the heart beats. High blood pressure, also called hypertension, means that the 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, High blood pressure linked to dementia - Heart health- msnbc.com Elderly people with high blood pressure may be more likely to develop thinking and learning problems that can lead to dementia, researchers said on Monday. High Blood Pressure (Hypertension) - Texas Heart Institute Heart High Blood Pressure is known as "the silent killer" because many people do not know they have the condition. High Blood Pressure: Heart and Blood Vessel Disorders: Merck Uncontrolled high blood pressure increases the risk of problems such as stroke, aneurysm, heart failure, heart attack, and kidney damage. What Is High Blood Pressure? Learn about various levels of blood pressure and how high blood pressure (hypertension) is defined. What Is High Blood Pressure? Some people may not find out they have it until they have trouble with their heart, brain, or kidneys. When high blood pressure is not found and treated, Your Guide to Lowering High Blood Pressure, NHLBI This site, for people who want to learn about preventing and controlling high blood pressure. Based clinical guidelines and research studies, Healthy Hearts: Hypertension/High Blood Pressure - The Human Heart A slightly enlarged heart can function well, but a significantly enlarged heart cannot. High blood pressure also causes damage to the arteries, High blood pressure (hypertension) - causes, treatments and High blood pressure (hbp) or hypertension means high pressure (tension) in the arteries. Arteries are vessels that carry blood from the pumping heart to all High Blood Pressure (Hypertension) - Symptoms, Causes, Diagnosis Many people have high blood pressure and don't even know it. The key complications of high blood pressure include heart disease, heart attack, High Blood Pressure Many people have high blood pressure for years without knowing it. Uncontrolled high blood pressure can lead to stroke, heart attack, congestive heart |
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