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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Treatments: Guide to Lowing High Blood Pressure It is important to take steps to keep your blood pressure under control. The treatment goal is blood pressure below 140/90 and lower for people with other High blood pressure: Lifestyle changes to control it - MayoClinic.com High blood pressure: Lifestyle changes are an essential part of controlling this condition. Natural Remedies for High Blood Pressure Lifestyle changes and natural remedies may help to control high blood pressure, but your doctor may also recommend medication to lower high blood pressure. Prevent and Control High Blood Pressure: Mission Possible Help prevent and control high blood pressure using the education materials and activity ideas from this national campaign. Blood Pressure Association: High blood pressure - take control Take Control of high blood pressure. The Blood Pressure Association is fighting high blood pressure (hypertesion) to beat stroke and heart disease. High Blood Pressure - Strategies to control High Blood Pressure - Cleveland Clinic Heart and Vascular Institute Preventive Cardiology doctors, leader in heart disease prevention and risk factor High blood pressure and exercise: Why activity is key - MayoClinic.com Flexibility and strengthening exercises are an important part of an overall fitness plan, but it takes aerobic activity to control high blood pressure. Control of Arterial Blood Pressure autonomic nervous system, capillary fluid shift, hormonal mechanisms. Tips to Control High Blood Pressure Dr. Elijah Saunders, a University of Maryland cardiologist and world-renowned hypertension expert, discusses the causes and dangers of high blood pressure 10 Ways to Control Your High Blood Pressure Follow your healthcare professionals' recommendations to control high blood pressure. |
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