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 nose bleed
A Child Who Has a Nosebleed and High Blood Pressure
care unit because of high blood pressure. Eight hours. earlier, he suddenly developed intermittent nosebleed-. ing. His parents brought him to the emergency

Nosebleed
Nosebleeds can also be caused by trauma to the nose, head, or facial area; by conditions such as leukemia, high blood pressure, kidney or liver disease,

nosebleed -- Britannica Online Encyclopedia
Britannica online encyclopedia article on nosebleed: an attack of bleeding from the nose. Vascular disease, such as high blood pressure, may provoke it,

Nosebleeds (epistaxis)
A nosebleed usually occurs due to a ruptured blood vessel located in the If the bleeding is caused by another disease, such as increased blood pressure,

Nose Bleed
If your blood pressure was high, you should have your blood pressure rechecked If your nose continues to bleed after performing these steps twice return

NOSEBLEEDS (EPISTAXIS) - a guide for patients
A nosebleed (epistaxis) is the relatively common occurrence of bleeding from the pressure and reducing the blood pressure in the head by sitting upright

Nosebleed Causes, Symptoms, Diagnosis, Treatment, and Prevention
Read about nosebleed causes such as blood thinners, trauma, nose picking, Hypertension (high blood pressure); Use of blood thinning medications

nose bleed & high blood pressure - ABC Homeopathy Forum
ABC Homeopathy Forum- nose bleed & high blood pressure.

Nose Bleeds
Causes of upper septum nose bleeds; High blood pressure; Disease of the arteries such as atherosclerosis; Side effects of medications and drugs such as

Nose Bleed Remedies - Health 911
If the bleeding hasn't stopped after 30 minutes of pressure. If blood runs down the back of your throat even when the nose is pinched.

Nose Bleeds
Posterior nosebleeds are more likely to occur in older people, persons with high blood pressure, and in cases of injury to the nose or face.

NOSE BLEEDS Symptoms, Cure, Cause, Treatment, Homeopathy for NOSE
Nosebleed with dry coryza, preceded by pressure and tightness at the root of nose; blood thick and of a dark-red color; persistent tickling high up in

MedlinePlus Medical Encyclopedia: Nosebleed
Repeated nosebleeds may be a symptom of another disease, such as high blood pressure, allergies, a bleeding disorder, or a tumor in the nose or sinuses.

Nosebleeds: First aid - MayoClinic.com
This latter form of nosebleed is much less common. It may be caused by hardened arteries or high blood pressure. These nosebleeds begin spontaneously and

Nosebleed - Yahoo! Health
It may be more difficult to stop a nosebleed if you have high blood pressure (hypertension). This is because blood is pumping at a higher pressure,

NOSE BLEEDS - EPISTAXIS - Information about NOSE BLEEDS - EPISTAXIS
If such a cold follows nasal surgery, this may cause severe bleeding. High blood pressure or heart failure can cause nose bleeds; the former because of

Nose Bleeds: Overlooked Causes and Treatments of Epistaxis
While I knew that high blood pressure could cause nose bleeds, what I found out from my physical therapist was that in my case I had localized high blood

Nosebleeds: What to Do When Your Nose Bleeds -- familydoctor.org
This type of nosebleed is more common in the elderly and is often due to high blood pressure, atherosclerosis, daily aspirin use or bleeding disorders.

Nose Bleeds Epistaxis- Kevin Kavanagh
It can be anterior but often is posterior or from the back of the nose. The bleeding is usually associated with high-blood pressure.


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