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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Tea | High Blood Pressure This switch led to a reversal of the blood pressure trends. The study concluded that drinking moderate amounts of green tea each day can help to prevent The Health Benefits of Green Tea People have always been plagued by high blood pressure, which is triggered by the loss of elasticity in the arteries. Green tea inhibits the production of health benefits of green tea Green Tea and Blood Pressure - How to Use Green Tea To Lower Your High Blood Pressure Symptoms. Green Tea and Blood Pressure - How to Use Green Tea To Lower Your The effects on blood pressure are most likely when caffeine is taken in excessive Scientific studies investigating green tea's effects on blood BBC - Health - Healthy living - Caffeinated drinks Green tea controls high blood pressure High blood pressure places a serious burden on the vascular system and contributes to atherosclerosis. Black and Green Tea Polyphenols Attenuate Blood Pressure Increases High blood pressure places a serious burden on the entire vascular system. Green tea catechins have shown promise in treating high blood pressure by Tea Drinkers Reap Blood Pressure Benefits By blocking the effects of ACE, blood pressure is reduced significantly in most hypertensives. Green tea is a natural ACE inhibitor. Green Tea Extract - Life Extension Caffeine (including caffeine from green tea) may increase blood pressure in people taking propranolol and metoprolol (medications used to treat high blood Green tea (Camellia sinensis) - MayoClinic.com Epidemiologic studies indicated that tea consumption slightly reduces blood pressure. We conducted two studies to determine whether black and green tea can Green tea Effects on blood pressure of drinking green and black tea. J Hypertens. 1999;17(4):457-463. Lambert JD, Yang CS. Mechanisms of cancer prevention by tea |
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