The only known cause for
mesothelioma in the United States is exposure to
asbestos.
Asbestos is a substance used for many years in insulation
materials and other construction products. Asbestos is made
up of clusters of fibers that break apart when damaged or
disturbed. These fibers can then become airborne and are
breathed in by those who work with asbestos or are exposed
to the asbestos particles. Scientists are uncertain as the
specific mechanism that causes
asbestos
disease; however, it is thought that the fibers are so
small that they are not caught by the body's defense filters
and can float around in the lungs for indefinite periods of
time.
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