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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High blood pressure (hypertension) Coping with heart disease. Physical activity may be good for the heart, but can you exercise safely if you have high blood pressure or a heart condition? High Blood Pressure and Heart Disease: Health Topics: University Over time, this increase in blood pressure can damage the blood vessels or vital organs. This can lead to strokes, heart disease, or kidney disease. High High Blood Pressure (Hypertension) - Patient UK Having high blood pressure is one of several 'risk factors' that can increase your chance of developing heart disease, a stroke, and other serious High Blood Pressure: Things You Can Do to Help Lower Yours High blood pressure damages your blood vessels. This in turn raises your risk of stroke, kidney failure, heart disease and heart attack. Return to top High Blood Pressure (Hypertension) - Symptoms, Causes, Diagnosis The key complications of high blood pressure include heart disease, However, the progress of heart disease caused by high blood pressure can be slowed Blood pressure: information about, high blood pressure, symptoms It directly increases the risk of heart disease. High blood pressure is a risk for heart disease because the heart is working harder than normal thus Amazon.com: Heart Disease and High Blood Pressure (Getting Well Amazon.com: Heart Disease and High Blood Pressure (Getting Well Naturally): Books: Michael T. Nd Murray by Michael T. Nd Murray. What Is High Blood Pressure? High blood pressure directly increases the risk of coronary heart disease (which leads to heart attack) and stroke, especially when it's present with other High Blood Pressure High blood pressure directly increases the risk of coronary heart disease (which leads to heart attack) and stroke, especially along with other risk factors What Is High Blood Pressure? With high blood pressure, the heart works harder, your arteries take a beating, high blood pressure in people with diabetes and chronic kidney disease. |
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