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.

blood pressure resting
CAT.INIST
The effects of isometric exercise training on resting blood pressure and Isometric exercise training has been shown to reduce resting blood pressure,

Aerobic Exercise and Resting Blood Pressure in Women: A Meta
aerobic exercise on resting systolic and diastolic blood pressure in women. obic exercise causes small reductions in resting systolic blood pressure in

Walking and resting blood pressure in adults: a meta-analysis.
BACKGROUND: The purpose of this study was to examine the effects of walking on resting systolic and diastolic blood pressure in adults.

MedlinePlus Medical Encyclopedia: Blood pressure
Blood pressure is usually measured while you are seated with your arm resting on a table. Your arm should be slightly bent so that it is at the same level

Heart Rate and Blood Pressure Resting Levels and Responses to
Resting heart rate (HR), systolic blood pressure (SBP), and diastolic blood. pressure (DBF) were measured on 3 successive mornings in the homes of

Elevated Resting Blood Pressure and Dampened Emotional Response
METHODS: Sixty-five normotensive volunteers had their resting blood pressure measured, then rated their emotional responses to a series of positive and

Blood Pressure, Resting Energy Expenditure, and Creatine Kinase
In a recent paper, Luke et al1 found a significant association between resting energy expenditure (REE) and blood pressure in black people of sub-Saharan

IngentaConnect The effects of blood pressure resting level and
However, it remains possible that this relationship is artifactual, in that resting blood pressure levels and cardiovascular reactions might both reflect

Your High Blood Pressure Questions Answered Á” Guidelines Lowered
Under the stricter guidelines, a resting blood pressure reading below 120/80 millimeters of mercury (mm Hg) is considered Áœnormal.Á« If your resting blood

Exercise and resting BP
Progressive resistance exercise and resting blood pressure: A The aerobic exercise prescription for lowering resting blood pressure includes moderately

Blood pressure - Wikipedia, the free encyclopedia
Typical values for a resting, healthy adult human are approximately 120 mmHg (16 . Arterial blood pressure (BP) is most accurately measured invasively.


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