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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Low Blood Pressure Ups Stroke Risk in Kidney Patients
High blood pressure was associated with a higher stroke risk in both chronic kidney You can learn to manage the pain and live without migraine limits.

Association of low blood pressure with anxiety and depression: the
Objective: To investigate whether low blood pressure is associated with anxiety . diabetes mellitus, fibromyalgia, headache (migraine or non-migraines),

Relationship between migraine, blood pressure and carotid
ied the association between migraine and blood pressure in a population-based .. 23 Pilgrim JA, Stansfeld S, Marmot M. Low blood pressure,. low mood?

Heart failure and low blood pressure bad combo: study
Patients with heart failure and low systolic blood pressure are more likely to a recent study published in the Journal of the American Medical Association.

InteliHealth:
James S. Winshall, M.D., is an associate physician at Brigham and Women's Low blood pressure doesn't develop during a typical migraine headache.

Migraine headache - CNN.com
Beta blockers â” which are commonly used to treat high blood pressure and coronary artery disease â” can reduce the frequency and severity of migraines.

In Kidney Disease Patients, Low Blood Pressure Increases Stroke Risk
"Most likely, low blood pressure identifies individuals with weak hearts or with The study entitled, "Lowest Systolic Blood Pressure is Associated with

Low Blood Pressure (Hypotension) Causes, Symptoms, Diagnosis, and
Learn about low blood pressure (hypotension) is blood pressure below normal. There are many causes of low blood pressure, and treatment is dependant

Migraine Headaches
Low blood sugar is frequently associated with migraine; studies have shown . not take niacin if you have a liver disorder, gout or high blood pressure.

Low Blood Pressure- Health Encyclopedia and Reference
Several studies have suggested that low blood pressure may be associated with Thanksgiving is over and I actually made it through without a Migraine.

University of Texas Medical Branch - Migraines Associated with
The research linking migraines with high blood pressure and coronary heart may be helped by a diet that helps prevent low blood-sugar (hypoglycemia),


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