There
are several risk factors that increase the likelihood that a person
will develop mesothelioma. The primary risk factor is asbestos exposure.
Exposure to this very harmful substance can significantly enhance the
chances of contracting the disease. Smoking does not have a direct
causal relationship with mesothelioma but is a significant compounding
factor and increases the chances of developing the disease. Other less
common secondary factors include exposure to radiation, zeolite, simian
virus 40 (SV40) and erionite. We discuss each of these risk factors in
more detail below. Please click on the links to learn more about each
mesothelioma risk factor.
Exposure to Asbestos
Exposure to asbestos is the leading risk factor associated with
mesothelioma. Asbestos is an insulating material comprised of
magnesium-silicate mineral fibers. It was favored by builders and
contractors for many years for its low heat conductivity and resistance
to melting and burning. Since researchers have identified more and more
links between mesothelioma and exposure to asbestos, the material is now
less widely used. Prior to this discovery, however, millions of
Americans have experienced serious exposure to this harmful substance.
Smoking and Mesothelioma
Smoking
alone is not linked to mesothelioma, but smokers who are exposed to
asbestos have a much higher chance of developing asbestos lung cancer
(as much as fifty to ninety percent higher) and as much as double the
risk of developing mesothelioma.
Less Common Mesothelioma Risk Factors
Radiation
Thorium
dioxide (Thorotrast), a substance used in x-ray tests in the past has
reported links to pleural mesothelioma and peritoneal mesothelioma. The
use of Thorotrast has been discontinued for many years due to this
discovery.
Zeolite
Some mesothelioma cases in the Anatoli region within Turkey have been
linked to Zeolite, a silica based mineral with chemical properties
similar to asbestos found in the soil there.
Simian Virus 40 (SV40)
Some scientists have found the simian virus 40 (SV30) in mesothelioma
cells from humans and have been able to create mesothelioma in animals
with the virus. The relationship between this virus and mesothelioma is
still unclear, however, and further research is being conducted to gain
clarity on this potential link.
Erionite Exposure
Erionite is a naturally occurring mineral that possesses properties
that are very similar to those of asbestos. There have been several
documented cases of mesothelioma in indivuduals living near large
erionite deposits.
Carbon Nanotubes
Researchers continue to evaluate nanotube exposure as a possible risk
factor for mesothelioma even though scientists have not expressed
immediate concern.