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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Start With Your Heart On the bright side, we do know of several factors that may contribute to high blood pressure and put us at increased risk for heart attack and stroke. Blood Pressure: lifeclinic.com A blood pressure and hypertension resource with information and tools to measure and chart Risk Factors · Low Blood Pressure · Hypertension & Pregnancy Tips to Control High Blood Pressure Below is a list of high blood pressure risk factors. People with any of these risk factors should have their blood pressure checked every time they visit High Blood Pressure (Hypertension) - Patient UK Having high blood pressure is one of several 'risk factors' that can increase your chance of As a rule, the higher the blood pressure, the greater the risk. High Blood Pressure Associated With Risk For Mild Cognitive Impairment High blood pressure appears to be associated with an increased risk for mild cognitive impairment, a condition that involves difficulties with thinking and NIHSeniorHealth: High Blood Pressure - Risk Factors and Prevention High Blood Pressure. Risk Factors and Prevention. Photo of a man reading a newspaper. - Click to enlarge in new window. Click image to enlarge Agent Orange tied to blood pressure risk - Heart health- msnbc.com US veterans exposed to the defoliant Agent Orange during the Vietnam War may face an increased risk of high blood pressure, an expert panel said, BBC NEWS | Health | Drink lowers blood pressure risks Men with high blood pressure can reduce their risk of a heart attack by having a drink or two a day, a study suggests. BBC NEWS | Health | Teenage blood pressure risk clue Teenagers who cannot process insulin properly have a higher risk of high blood pressure, researchers find. Blood pressure risk to children from high salt diets | Science Higher salt diets in children lead to raised blood pressure which increases the risk of heart disease and stroke in later life, according to a study based Long Hours Up High Blood Pressure Risk The more hours you work, the greater your risk of high blood pressure. High blood pressure: Are you at risk? - MayoClinic.com High blood pressure: Are you at risk? Learn the common risk factors. High blood pressure quiz: Are you at risk? - MayoClinic.com High blood pressure is dangerous. Find out if you're at risk. Airplane noise tied to high blood pressure risk | Health | Reuters NEW YORK (Reuters Health) - People who live near airports may have an elevated risk of high blood pressure due to noise pollution, a Swedish study suggests. Top 10 High Blood Pressure Risk Factors An important step in understanding and evaluating your risk of developing high blood pressure is to know what elements contribute to this risk. High Blood Pressure Risk From Harvard Men's Health Watch comes this tool that can help you to evaluate your high blood pressure risk. If you are a man over the age of 40 you might High Blood Pressure Get the facts on high blood pressure and how to live a heart-healthier life. Find out how you can reduce your risks for heart attack and stroke with proper Wine Eases Blood Pressure Risks Wine may literally be the blood of life, according to a new French study that shows wine appears to lower the health risks associated with high blood High Blood Pressure Health Risk Calculator Enter your blood pressure numbers to understand your health risks and more. |
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