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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The mean arterial blood pressure (MAP) and the heart rate were measured in all groups. From the results, the basal (control) MAP were 93.8 +/- 4.5,

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Patients with Major Depression may be treated with medication, . Some side effects seen with MAO inhibitors include: low blood pressure (feeling faint)

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Cardiologists have long noted that many heart patients suffer from depression, but it has always been a chicken-and-egg issue: which came first,

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Higher blood pressure is linked to depression, but only in people with a family The roots of the relationship between high blood pressure and depression

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At this time, it was thought that low blood pressure was a major cause of depression and tiredness. Many people were quite wrongly treated for low blood

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Depressed people with high blood pressure are less likely to have their blood pressure under control than those who are not depressed, researchers reported

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Can depression and anxiety help cause hypertension? ⢠How can mood affect blood pressure? ⢠Can treatment for depression help prevent hypertension?

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Blood pressure is linked to depression, but only in people with a family history of hypertension, a new study finds. People whose parents did not have high

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There can be many causes for depression. One possibility that should always be considered is side effects of medication for high blood pressure.

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The relationship between depression and blood pressure is more controversial. .. Low blood pressure and depression in older men: a population based study


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