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. |
| blood pressure webmd |
|
Shock Treatment: First Aid Information for Shock First Aid Center: Basic first aid treatment information at WebMD First Aid. Circulation: assessment of the adequacy of the blood pressure adequate and Severe Allergic Reaction (Anaphylactic Shock): First Aid First Aid Center: Basic first aid treatment information at WebMD First Aid. If blood pressure is dangerously low, medication to increase blood pressure High Blood Pressure â• What You Can Do The risk of high blood pressure begins to climb when men turn 45. Hereâ™s how to prevent it, recognize it, and treat it. Reduces Blood Pressure, Helps Prevent Premature Birth Reduces Blood Pressure, Helps Prevent Premature Birth. Metabolic Syndrome-Topic Overview 130/85 mm Hg or higher, or taking medicine for high blood pressure. Fasting blood sugar WebMD Editors determine the topics and placement on our lists. Diabetes: Complications Up to two out of three people with diabetes have high blood pressure. WebMD Editors determine the topics and placement on our lists. High Blood Pressure (Hypertension) - Symptoms, Causes, Diagnosis High blood pressure â“ on WebMD High blood pressure â“ on MedicineNet Many people have high blood pressure and don't even know it. Vioxx, Blood Pressure Medications Don't Mix The popular arthritis drug Vioxx is once again causing concern among heart specialists. This time, a study suggests that taking both Vioxx and high blood Do Pain Relievers Raise Blood Pressure? New research shows that men who regularly took the pain relievers were no more likely than those who didn't to have persistent high blood pressure. Dark Chocolate May Cut High Blood Pressure Dark chocolate might help fight high blood pressure, new research shows. TV Bad for Obese Kids' Blood Pressure? A new childhood obesity study links watching lots of TV to high blood pressure in obese children. Kids' High Blood Pressure Often Missed High blood pressure in children and teens appears increasingly common, but it frequently goes undiagnosed, according to new research. Sleep Disorders: Women's Wake Up Call: Little Sleep, Bigger Blood WebMD Health News. View RSS feed. Monday, October 29, 2007 Now you learn that you have high blood pressure and there's no apparent reason. What gives? ADHD Medications and Treatments: Blood Pressure Changes with ADHD While there is little evidence of significant blood pressure changes in children treated with ADHD medications, less is known about adults who are at a What is blood pressure(BP)? Find the definition for blood pressure the pressure or tension of the blood within the systemic arteries, maintained by the contraction of the left ventricle, the resistance of the arterioles and What is diastolic pressure? Find the definition for diastolic the intracardiac pressure during or resulting from diastolic relaxation of a cardiac chamber; the lowest arterial blood pressure reached during any given High Blood Pressure (Hypertension)-Overview What is high blood pressure? When you have high blood pressure, or hypertension, the force of blood against your artery walls is too strong. WebMD Hypertension/High Blood Pressure Center - Find high blood High blood pressure affects I in 4 American adults. Find in-depth high blood pressure and hypertension information including its causes, symptoms, |
| blood pressure webmd |
|
blood pressure monitor consumer report blood pressure medicine and swelling blood pressure and pulse rates blood pressure medicine and pregnancy |