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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Mental Help Net - High Blood Pressure High blood pressure, called hypertension by doctors, affects nearly one out of . Questions and Answers. Ask Dr. Schwartz - anxiety/high blood pressure High blood pressure (hypertension) - causes, treatments and High Blood Pressure: Medical information about hypertension, its treatment An elevated blood pressure brought on by the stress and anxiety of a visit to Dr. Weil Community Well, after years of anxiety, I finally got high blood pressure from the stress. I am on Cozaar and it really doesn't do enough to keep the bp under control InteliHealth: Anxiety can raise blood pressure. That's why some people who have a normal blood pressure at home find that their blood pressure is high when they see a Pheochromocytoma: high blood pressure, headaches, and anxiety. Web's most complete pheo site. Pictures and x-rays help explain this adrenal tumor. Symptoms, diagnosis, and treatment options including laparoscopic Stress Education Center - Article on stress related high blood Stress and health related articles on topics such as high blood pressure, chronic pain, fear of making presentations, and a Guide to Relaxation. Anxiety vs High Blood Pressure - Heart Disease - MedHelp Anxiety vs High Blood Pressure. This forum is for questions and support regarding heart issues such as: Angina, Angioplasty, Arrhythmia, Bypass Surgery, Anxiety & Blood Pressure A: It is important to take the medication you need for anxiety. In addition you may need blood pressure medication if your high blood pressure continues. Is anxiety raising my blood pressure? anxiety is one of the underlying reasons for your high blood pressure. Doctors on the whole are aware of this and have even dubbed the condition "white High blood pressure: Get the most out of home monitoring Monitoring blood pressure at home, where anxiety won't cause those spikes, can help determine if you have true high blood pressure or simply white-coat Anxiety: A cause of high blood pressure? - MayoClinic.com Anxiety can cause dramatic, temporary increases in blood pressure. |
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