Cholesterol word itself makes the chill run down the spine of many and gives them sleepless nights. Cholesterol is the most popular word within medical arena and many experts have defined it in various different forms. Cholesterol is the fatty, waxy and oily lipid substance found in the body. It circulates in the bloodstream and is carried in packages, which is known as lipoproteins. It performs various functions within the body like guarding the arteries, providing fat to the body and also producing hormones.