Environmental
exposures:
Incidence of mesothelioma had been found to be higher
in populations living near naturally occurring asbestos. For example, in
central Cappadocia, Turkey, mesothelioma was causing 50% of all deaths in three
small villages — Tuzköy, Karain and Sarıhıdır. Initially, this was attributed
to erionite, a zeolite mineral with similar properties to asbestos. Recently,
however, detailed epidemiological investigation showed that erionite causes
mesothelioma mostly in families with a genetic predisposition. The documented presence
of asbestos fibers in water supplies and food products has fostered concerns
about the possible impact of long-term and, as yet, unknown exposure of the
general population to these fibers.
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