It has been researched that more than 90% of all mesothelioma cases are a direct result of asbestos poisoning. Scientists have clearly established the correlation between asbestos exposure and mesothelioma. They have also established that higher levels of asbestos exposure lead to much higher chances of developing asbestosis and then, eventually, mesothelioma.
A 2013 report suggested that there were 125 million people who might have been exposed to asbestos during their lifetime. However, the vast majority of these people might have been exposed only to trace levels of asbestos that are not enough to cause mesothelioma. Even if one is exposed to high levels of asbestos, chances that they will be affected by mesothelioma are rare, unless the exposure is repeated.
This is why most mesothelioma patients are those who worked in work environments that has high levels of asbestos exposure on a daily basis. Shipyard workers and insulation manufacturer workers were among the worst affected as they constantly worked in processes or assembly lines that spewed up asbestos dust.
Asbestos is a type of material that is very durable. It is also cost efficient and is highly resistant to heat, temperature changes and is also a nonconductor or electricity. This is why it was extensively used in many industries before its health risks became known. In the current world, asbestos has been heavily banned but some workers still come in contact with it when they work with structures that were built many years ago. For example, a shipyard worker in charge of renovating a 50 year old ship may be working in a high-asbestos exposure environment. But employers these days enforce strict safety standards when asbestos exposure may be possible, making its employees wear masks or protective full face helmets.
One should know that even washing the clothes of someone who has worked in a high exposure asbestos environment can result in secondary or passive asbestos poisoning.