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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Food Standards Agency - Eat well, be well - Blood pressure Some people have low blood pressure and many people have normal blood pressure, but millions of Try to avoid eating lots of foods that are high in salt. Go Ask Alice!: Managing high blood pressure through diet Avoid foods high in sodium. Sodium causes vasoconstriction, the narrowing of blood Eat calcium and magnesium rich foods to help reduce blood pressure. High Blood Pressure Diet: Foods to Avoid A proper diet can make managing high blood pressure much easier. Similarly, eating the wrong foods can make things worse by increasing the difficulty of FCIC: Eat Right to Help Lower Your High Blood Pressure "It seems like you have a really big role in lowering your blood pressure. You can eat foods lower in sodium, lose weight, be more active, Five 'Health Foods' to Avoid 1/31/04 Five "Health Foods" to Avoid. By Dr. Joseph Mercola with Rachael Droege . However, if you are overweight, have high blood pressure or high blood sugar, Ways To Lower High Blood Pressure - Foods That Lower Blood Pressure Learn how to control your high blood pressure naturally with diets by knowing about foods to avoid to reduce hypertension and food to eat that helps Tips to Control High Blood Pressure Hypertension or high blood pressure is often a precursor to heart disease. So, you avoid foods high in fat and cholesterol and are exercising on a Hypertension, Food/Diet therapy for high blood pressure, High If you have high blood pressure, avoid eating certain highly processed, overly salted foods, such as frozen pizza, canned salted vegetables, High Blood Pressure Foods Avoid Blood pressure, Your eating habits determine how well you fight hypertension, so be very careful about the foods you must avoid, for otherwise your blood Lifestyle Steps to Lower Your Blood Pressure - BC HealthFile #68b Can other foods help to lower or prevent high blood pressure? of alcohol can increase your blood pressure. You may choose to avoid alcohol altogether. |
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