Abstract
Health risks from exposure to asbestos fibers have been evaluated based on professional histories, when fiber concentrations at workplaces were greater than today. A linear no-threshold model was used for risk estimation, although its relevance has not been proven. Asbestos fibers are often detected in lungs and pleura during autopsy, but finding evidence of fibers does not prove that a disease has been caused by asbestos. Thus, targeted detection of mesothelioma and other conditions associated with asbestos exposures has resulted in an increase in the reported incidence of mesothelioma among high-risk groups. Histological and immunochemical characteristics of malignant mesothelioma partially overlap with other cancers, which may also contribute to the overdiagnosis in exposed populations. Differences in carcinogenicity of various asbestos types are discussed here. Prohibitions of asbestos in some developed countries must be reconsidered on the basis of independent research. Life-long bioassays are the most promising way to obtain reliable information regarding asbestos-related malignancy. It should be stressed that non-use of asbestos contributes to an increase of harm from fires, armed conflicts, and traffic accidents.
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