Attention, chocolate lovers: You may not be able to help yourselves. Swiss and British scientists have linked the widespread love of chocolate to a chemical "signature" that may be programmed into our metabolic systems.
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A thoracic aortic aneurysm can sometimes be seen on a regular chest x-ray. Other special x-ray tests, such as a chest CT scan, are used to detect and
measure the size of the aneurysm.