It is very important to have Information on the Cholesterol levels in your body so that you can prevent heart attacks. What is Cholesterol?
"Cholesterol is a fatty substance (a lipid) that is an important part of the outer lining (membrane) of cells in the body of animals. Cholesterol is also found in the blood circulation of humans. The cholesterol in a person's blood originates from two major sources, dietary intake and liver production."

Get all the details about Cholesterol and its effect on the human body here in this article;

http://www.medicinenet.com/cholesterol/focus.htm