Mesothelioma Risk Factors

In as many as 75-85% of mesothelioma cases, there is a history of exposure to asbestos. The material was used extensively in numerous industries from the early 1900’s through the 1960’s. Through the World War II era, over 8 million workers were exposed to asbestos. Evidence that serious health problems were related to asbestos began to mount, and in 1999, a conclusive link between asbestos exposure and mesothelioma was made.
Asbestos is a broad term which refers to a collection of minerals know as asbestiform. It is a small mineral comprised of tiny fibers. Asbestos fibers exist in two forms; they can be either amphibole or serpentine (chrysotile). Several studies suggest that the amphibole form of asbestos is more dangerous than the chrysotile form, especially in mesothelioma.

These small particles float in the air, in an exposed environment and they may be inhaled or swallowed. Asbestos fibers breathed into the lungs cannot be expelled; they become embedded in the thin lining of the lungs, the mesothelium. Over the period of many years, cells in the mesothelium can become cancerous. In most cases of mesothelioma, it takes decades for the disease to cause symptoms.