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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High blood pressure and exercise: Why activity is key - MayoClinic.com
High blood pressure and exercise Á” Here's what the connection means to you.

When Carbs are Good: Lower Blood Pressure
When Carbs are Good: Lower Blood Pressure. Click Here. The Authority In Diet, Fitness And Motivation. Member Login Not a Member?

Cobblestone walking good for seniors, lowers blood pressure among
A recently completed study by scientists at the Oregon Research Institute (ORI) in Eugene confirmed earlier findings from a pilot study that walking on a

Breastfeeding As Good For Children's Blood Pressure As Exercise
Breastfeeding is as good for children's blood pressure as exercise and dietary salt restriction, finds a study in Archives of Disease in Childhood.

Dark Chocolate Is Healthy Chocolate
Dark chocolate has ingredients that lower blood pressure and fight disease, chocolate -- but not white chocolate or milk chocolate -- is good for you.

what should a good blood pressure be | Lycos iQ
what should a good blood pressure be - 120/80 mmHg is the optimal http://www.vaughns-1-pagers.com/medicine/blood-pressure.htm give a chart of pressures

High Blood Pressure (Hypertension) - Patient UK
In some cases, the target is to get the blood pressure below 130/80 mmHg. This generally applies to people who have diseases where very good blood pressure

Amazon.com: Good News About High Blood Pressure: Everything You
Amazon.com: Good News About High Blood Pressure: Everything You Need to Know to Take Control of Hypertensionand Your Life: Books: Thomas Pickering by

Low blood pressure
Most people with low blood pressure are extremely lucky because on average they are going to live longer and need to take out a good pension policy!

Blood pressure normal? Maybe now it isnÁ™t.
The changes included a new definition of "normal" blood pressure. This meant that 45 million Less than 80. Used to be <85. Keep up the good work!

What Is High Blood Pressure?
Nearly 1 in 3 American adults has high blood pressure. Once high blood pressure develops, it usually lasts a lifetime. The good news is that it can be

Do You Have a Good Blood Pressure? 6/21/03
Recent expert guidelines on redefining high blood pressure categorize 45 million Americans as needing treatment. Is this some sort of drug company scam?

Blood Pressure Monitoring at Home -- familydoctor.org
This blood pressure monitoring device is good for hearing-impaired patients, since there is no need to listen to heart sounds through the stethoscope.

High Blood Pressure: Things You Can Do to Help Lower Yours
If you're overweight, losing weight usually helps lower blood pressure. Regular exercise is a good way to lose weight. It also seems to lower high blood

What Good Blood Pressure? OK, Rocky, IÁ™ll Tell Ya
What Good Blood Pressure, though not the best grammar, is still a very good question to ask. Make sure you know what good blood pressure is and how your own

Blood Pressure, A Doctor's Practical Guide With Insider's Tips
A good place to continue is with the Normal Blood Pressure page on the What Good Blood Pressure, though not the best grammar, is still a very good

Translating Blood Pressure Numbers
It is crucial to ÁśKnow Your NumbersÁ« with respect to Blood Pressure. Life-threatening complications For this reason, HDL is called "good" cholesterol.

Blood Pressure Chart - Normal Blood Pressure Range
For the scientists among you: The pressure of 1mm of mercury = 0.019337 PSI. A systolic blood pressure of 2 PSI is good, a systolic blood pressure of 3 PSI

What Is a Good Blood Pressure?
What is a good blood pressure? The information on this eMedTV Web page explains the factors that affect a good blood pressure reading, including lifestyle


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