Tuesday, August 25, 2015
Asbestos-Induced Mesothelioma
Asbestos, a group of chemically and physically distinct fibers, is one of
the most notorious carcinogens in the lung and pleura. The National
Institutes of Health in 1978 estimated that approximately 11 million
individuals had been exposed to asbestos in the United States since
1940. Although widely employed in World Wars I and II, the use of
asbestos has undergone major changes in recent decades, with severe
restrictions in most countries on amphiboles. In developed countries,
with the exception of Japan, asbestos production is controlled or
banned, while in developing countries, consumption has leveled off or
increased . Between the 1940s and 1970s, asbestos was utilized extensively
in insulation applications (primarily in the building construction
industry), and in asbestos-cement pipes. Current usage is generally
confined to chrysotile in four products: asbestos cement, friction materials,
roof coating and cements, and gaskets. In 1992 approximately 28
million tons of asbestos-cement products were produced in approximately
100 countries .
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