Asbestos manufacturers in the early 1970s had been aware before exposure to asbestos may lead to the risk of mesothelioma cancer, but they will this information as a commercial secret strict control up. The first chapter of exposure to asbestos reported in the mid-1960s. Until today, asbestos manufacturers still try to hide the dangers of asbestos long facts.
Prolonged exposure to asbestos and environmental exposure to asbestos caused mesothelioma risks increase dramatically, but recent study found even very short-term exposure to asbestos can cause the disease. Typically, mesothelioma need 20 to 40 years before showing symptoms, it is usually in the age between 50 to 70 were diagnosed of the disease.
Although the incidence in the past 20 years has increased, mesothelioma is still a relatively rare cancer. The United States each year there are about 2,000 new mesothelioma was diagnosed cases.
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