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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Finding Consensus in the Dietary Calcium-Blood Pressure Debate If you have high blood pressure (also called hypertension), taking a drug called a calcium channel blocker each day can lower your blood pressure and help BMJ BestTreatments :: Conditions :: High blood pressure :: Calcium The calcium antagonists can reduce the heart rate and relax blood vessels. Treating high blood pressure may require lots of time, patience and care by both Secondary high blood pressure: When another condition causes Tooth Decay Is Back - And Fluoride's No Help - Despite water fluoridation, a glut of fluoridated products, and skyrocketing children's fluoride overdose Vitamin D and Calcium for Blood Pressure Eat calcium and magnesium rich foods to help reduce blood pressure. Food sources rich in calcium include low-fat milk, green beans, sardines with bones, Go Ask Alice!: Managing high blood pressure through diet Key words: calcium-dietary, blood pressure, hypertension, review. This article has been cited by other articles: (Search Google Scholar for Other Citing High Blood Pressure: Things You Can Do to Help Lower Yours The previously reported inverse association of dietary calcium intake and blood pressure levels was examined in a Southern California community, Dairy products, calcium, and blood pressure -- Ackley et al. 38 (3 Salt has been blamed in the past as causing high blood pressure. New research though is suggesting that too little calcium or potassium as having some Ask the Dietitian - by Joanne Larsen MS RD LD - Salt & Sodium The influence of dietary and nondietary calcium supplementation on blood pressure. An updated metaanalysis of randomized controlled trials. Calcium supplementation for blood pressure If the glands secrete too much parathyroid hormone, the amount of calcium in your blood rises â” which triggers a rise in blood pressure. Dietary calcium and blood pressure: a meta-analysis of randomized Information about lowering your blood pressure from the American Academy of Calcium channel blockers: These drugs help prevent your blood vessels from |
| calcium and blood pressure |
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