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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Adolescent Obesity Adversely Affects Blood Pressure and Resting Heart Rate Methods and Results Height, body weight, resting HR, and systolic and

RESTING HEART RATE AND PRESSURE-RATE PRODUCT OF CHILDREN IN A
Resting heart rates were ascertained during the 1978Á“1979 school year in 3590 children Boys in the upper five percentiles of blood pressure-heart rate

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"What is a normal resting heart rate? Is 121 high? blood pressure is 129 over 89?" - Find the answer to this question and millions more on Yahoo!7 Answers.

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The variables assessed included resting heart rate, diastolic and systolic blood pressure, high-density serum lipoprotein, total serum cholesterol,

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This causes a drop in blood pressure, decreased heart rate, and decreased . Thus, the resting heart is normally maintained under the influence of some

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A resting heart rate for women is considered ÁśnormalÁ« if it is between about Blood pressure is also an idication of a healthy heart and something older

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The resting heart rate is the natural heartbeat measured after someone has been at ability to pump blood, and of those who had suffered heart attacks,

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Resting heart rate is the number of times your heart beats per minute Important Note: A few high blood pressure medications lower the maximum heart rate

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Blood pressure represents the force (pressure) exerted by blood against the The resting heart rate for the average person is between 70 and 90 beats per

Assessing resting heart rate in adolescents: determinants and
Heart rate and subsequent blood pressure in young adults: The CARDIA Study. Hypertension 1999; 33: 640-646. MEDLINE. 7 Greenland P et al. Resting heart rate

Heart rate - Wikipedia, the free encyclopedia
Heart rate reserve (HRR) is a term used to describe the difference between a person's measured or predicted maximum heart rate and resting heart rate.

University of Florida - Department of Recreational Sports
Resting Heart Rate & Blood Pressure. Resting Heart Rate (RHR) Resting Heart Rate is a personÁ™s heart rate at rest. The best time to measure resting heart

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Take resting measurements with subject seated. Enter information in left column; blood pressure, heart rate, and select appropriate gender.

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If your resting heart rate is usually 70 beats per minute and you suddenly are at 80 beats per Is a Vitamin Deficiency Causing Your High Blood Pressure?

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You must know your resting heart rate to use this method and insert your training This zone has been shown to help decrease body fat, blood pressure and

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New guidelines set a target "normal" blood pressure at less than 120 (systolic)/less than 80 (diastolic) mm Hg. A normal resting adult heart rate is

Blood pressure - Wikipedia, the free encyclopedia
The higher the heart rate, the higher (potentially, assuming no change in stroke volume) the arterial pressure. Volume of fluid or blood volume,


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