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Standing guard over blood vessel health

Updated: October 01, 2010

 

Damage to the endothelium sets the stage for cardiovascular disease.

The well-being of your heart and circulatory system depends on a layer of cells half the thickness of Scotch tape that stretches for thousands of miles. This layer, called the endothelium (en-doe-THEE-lee-um), was once thought to be little more than a barrier separating blood from the muscle, nerves, and connective tissue that make up arteries and veins. We now know that it is a dynamic regulator of blood vessel health. Damage to the endothelium, which often begins quietly in childhood, matures decades later as stiff or cholesterol-pocked blood vessels.

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