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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Morning Coffee Boosts Blood Pressure, Stress Hormones Throughout SAN DIEGO, CA -- March 4, 1999 -- People who drink four or five cups of coffee throughout the morning have slightly elevated blood pressure and higher Morning Coffee Boosts Blood Pressure, Stress Hormones All Day People who drink four or five cups of coffee throughout the morning have slightly elevated blood pressure and higher levels of stress hormones all day and High blood pressure coffee sex relaxation flying yoga hawthorn garlic Drinking coffee only has a small effect on blood pressure and therefore cutting down or stopping will not lower it. Other parts of your diet, Coffee and blood pressure It clearly shows the need for a high quality study examining the effect of coffee on blood pressure. In the meantime, the evidence to date suggests that for Coffee Raises Blood Pressure, Though Not by Much There's good news and bad news for java junkies. Modest coffee drinking is associated with a small increase in blood pressure, Johns Hopkins investigators New buzz on coffee: It's not the caffeine that raises blood pressure People who enjoy the occasional decaf latte may be getting more of a lift than they know, scientists report in today's rapid access issue of Circulation. Alcohol, Coffee, Smoking and High Blood Pressure - High Blood In one study, the caffeine consumed in 5 cups of coffee daily caused a mild increase in blood pressure in elderly people who already had hypertension, BBC NEWS | Health | Caffeine 'does not raise blood pressure' A Swiss study indicates that the caffeine contained in coffee is not, as was widely thought, responsible for raising blood pressure. Caffeine: How does it affect blood pressure? - MayoClinic.com It may also increase your blood pressure. The amount of caffeine in two to three cups of coffee can raise systolic pressure 3 to 14 millimeters of mercury Does Coffee Raise Blood Pressure? (INeedCoffee.com) Does coffee consumption lead to high blood pressure? Blood Pressure and Coffee (INeedCoffee.com) There have been some irresponsible articles written over the years, that assure the reader that drinking coffee will not raise your blood pressure. |
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