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Mesothelioma

Risk factors for mesothelioma

While the exact cause of mesothelioma may not be known, several factors may increase the risk of developing the disease.

Exposure to asbestos is a major risk factor for mesothelioma. Asbestos is a naturally occurring fibrous mineral that was found to have many useful industrial applications because of the fiber’s strength and resistance to fire and heat, as well as its low electrical conductivity. It’s now known that asbestos exposure is harmful and linked to several types of cancer, most commonly mesothelioma.

Knowing the risk factors for mesothelioma may help you take preventative measures to reduce the likelihood of developing the disease. Some common risk factors include:

Lifestyle

Smoking: Although smoking alone is not a risk factor for mesothelioma, some think that smoking in combination with asbestos exposure may increase a person’s risk of mesothelioma.

Exposure to chemicals

Asbestos: Exposure to asbestos is a major risk factor for mesothelioma. The risk from long-term asbestos exposure does not decrease over time. Rather, it may take more than 20 years from the last exposure before cancer develops. Talk to a doctor if you or a loved one has a history of asbestos exposure. Today the risk of exposure for workers in the manufacturing industry is much less because asbestos, by and large, is no longer used in the United States. Although the use of asbestos has decreased dramatically since the late 1980s, asbestos may still be found in older buildings or products.

SV40: Between 1955 and 1963, some polio vaccinations were infected with SV40 (simian virus 40). There is ongoing research exploring the possibility that SV40 infections may have an effect on the development of mesothelioma. Although there is no conclusive evidence, there may be an overlap in the peak age range of those who are diagnosed with mesothelioma (ages 50 to 70) and the timing of the exposure to SV40.

Thorium dioxide: Up until the 1950s, thorium dioxide was injected into the chest or abdomen before an X-ray was taken to create contrast in the image. There may be a link between the thorium dioxide, followed by a high dose of radiation, and mesothelioma.