LAGUNA DESIGN / SCIENCE PHOTO LIBRARY LAGUNA DESIGN / SCIENCE PHOTO LIBRARY
Cholesterol. Computer graphic of a cholesterol molecule. The atoms are colour-coded: carbon (C) is blue, hydrogen (H) is white and oxygen (O) is red. Cholesterol has the chemical formula C27H46O. Cholesterol is a lipid, a type of fatty acid. It is an important constituent of cells, playing a crucial role in the synthesis of hormones & bile salts. It also helps to transport fats in the blood to tissues throughout the body. High levels of cholesterol in the blood increase the risk of atherosclerosis, a condition in which fatty deposits (plaques) build up on the walls of arteries. Atherosclerosis is the principal cause of heart attack and stroke.
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