Asbestos is mined as a dense rock, which easily separates into fine fibers. Asbestos fibers are especially favored as building blocks for various materials because of its strength, temperature resistance and chemical inertness.
Undoubtedly, asbestos has provided mankind with so many uses. However, asbestos comes with accompanying health hazards. Studies show that about 1.3 million people are exposed to asbestos at the workplace. These include people who are working in the construction industry and those in the manufacture of products made of asbestos. Workers in the construction industry are especially exposed to the hazards of asbestos during building demolition and or renovation wherein asbestos products are removed from the site.
Although most of us may have been exposed to asbestos one time or another, illness caused by asbestos exposure is only evident to those people who are regularly exposed to this mineral. Since asbestos fibers are extremely fine, they are easily suspended in the air. Since experts discovered the hazardous effects of asbestos exposure, its use has been regulated from that time on. The use of asbestos in products like imitation logs for gas-burning fireplaces and spackling compound has long been banned in the United States. Asbestos regulation is aimed towards the reduction of asbestos fiber inhalation by workers and other people.
Prolonged exposure to the fine asbestos fibers suspended in the air may result into a form of pneumoconiosis known as asbestosis. Stiff lungs with an excess of scar or fibrous tissue are often the characteristic sign of asbestosis. A person suffering from this disease may find it difficult to breath because of the stiffness in the lungs. Much effort is needed in order to expand the lungs during breathing. Abnormal sounds in the chest may be heard. In some cases, the membrane surrounding the lungs called the pleura may develop calcified plaques. Asbestosis patients will experience shortness in breathing accompanied with dry cough. They may also develop clubbed fingertips with bluish hands and feet due to a deficient supply of oxygen in the blood.
It will take at least 10 years of exposure to asbestos before asbestosis appears. Asbestosis however may worsen once present in the body even when there is no more exposure to the offending substance. It has been observed that construction workers, pipe fitters, shipbuilders and those working in brake lining factories have higher risk of developing asbestosis. Cancer of the lungs is also a possible consequence of a long-term asbestos inhalation. Additionally, cigarette-smoking asbestos workers are four times at greater risk of developing lung cancer than people who are not exposed to asbestos. A rare type of cancer called pleural mesothelioma is also linked to asbestos inhalation. Studies show that about 70% of pleural mesothelioma victims has a history of asbestos exposure.
No treatment has been found to be effective against asbestosis. In lung cancer associated with asbestosis, surgery can be the form of treatment although the general outcome is often poor.
Therefore, in order to prevent any asbestos related diseases, it is important to provide proper dust control in workplaces where asbestos is processed. Studies show that the incidence of lung cancer and other asbestos related illnesses can be significantly reduced through proper dust control and management.
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