News tagged with cholesterol

Related topics: heart disease , heart attack , cholesterol levels , cardiovascular disease , stroke

Oxidized LDL might actually be 'good guy'

A team of investigators at the University of Kentucky has made a thought-provoking discovery about a type of cholesterol previously believed to be a "bad guy" in the development of heart disease and other conditions.

Sep 04, 2014
popularity 4.3 / 5 (3) | comments 0

Could a protein be linked to heart attacks?

A team of researchers at the University of Ottawa Heart Institute, led by Dr. Alexandre Stewart, have uncovered an intriguing link between heart attacks and a protein that is of great interest to drug companies ...

Sep 03, 2014
popularity 4.8 / 5 (4) | comments 0

A new way to look at diabetes and heart risk

People with diabetes who appear otherwise healthy may have a six-fold higher risk of developing heart failure regardless of their cholesterol levels, new Johns Hopkins Bloomberg School of Public Health research suggests.

Sep 10, 2014
popularity 3 / 5 (1) | comments 0

Is coconut oil good for you?

There is no consistent body of data that I am aware of to indicate that coconut oil has documented specific beneficial effects; hence, there is no data that I'm aware of to suggest people should go out of their way to consume ...

Sep 29, 2014
popularity 2 / 5 (5) | comments 3

Cholesterol

Cholesterol is a lipidic, waxy steroid found in the cell membranes and transported in the blood plasma of all animals. It is an essential component of mammalian cell membranes where it is required to establish proper membrane permeability and fluidity. Cholesterol is the principal sterol synthesized by animals, but small quantities are synthesized in other eukaryotes, such as plants and fungi. It is almost completely absent among prokaryotes, which include bacteria. Cholesterol is classified as a sterol.

Since cholesterol is essential for life, it is primarily synthesized de novo within the body. However excessive levels of cholesterol in blood circulation are strongly associated with progression of atherosclerosis. For an adult, typical total body cholesterol synthesis is about 1 gram per day (less if dietary intake is high) and total body cholesterol content is about 35 g. Average dietary intake in western societies is 0.2 - 0.3 grams. Cholesterol is excreted by the liver via the bile into the digestive tract. Typically about 50% of the excreted cholesterol is reabsorbed by the small bowel back into the blood stream.

The name cholesterol originates from the Greek chole- (bile) and stereos (solid), and the chemical suffix -ol for an alcohol, as François Poulletier de la Salle first identified cholesterol in solid form in gallstones, in 1769. However, it was only in 1815 that chemist Eugène Chevreul named the compound "cholesterine".

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