cholesterol_arteriesCholesterol is a sterol (a combination steroid and alcohol). About half of all adult Australians have elevated blood cholesterol. For this we can thank our fondness for dairy foods, red meat, takeaway foods and processed foods rich in fats.

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 François Poulletier de la Salle in 1769.

However, it is only in 1815 that chemist Eugène 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. Read the rest of this entry