The Facts
Asbestosis is a harmful lung condition that develops in workers who, over the years, have breathed in large amounts of asbestos dust from industrial materials. When someone inhales the dust, the microscopic asbestos fibers settle in the lungs, where they may cause scars and make breathing increasingly difficult.
One of the unusual things about asbestosis is the long "lag-time" between asbestos exposure and the resulting illness - a year of exposure in youth may not cause symptoms until 30 years later. Once someone develops asbestosis, however, there is no cure. Breathing problems will get steadily worse, and in about 15% of people, severe shortness of breath and respiratory failure develop. For someone who smokes and has had asbestos exposure, there is a greatly increased chance of developing lung cancer. Symptoms may appear within ten years of the initial exposure.
Causes
Asbestosis is what doctors call an occupational lung disease, caused by inhaling harmful particles while at work. Diseases due to chronic inhalation of mineral dusts are called pneumoconiosis. The kind of lung disease or pneumoconiosis that develops depends on the size and kind of particles someone keeps breathing in. Luckily, the body is able to get rid of most inhaled particles. Special cells in the lungs engulf them and make them harmless. But some particles like asbestos cause damage that can't be reversed.
Asbestos is the term for a group of minerals used in many industries. They come in various forms that can be identified by the length of the fibers they're made up of. Medium and longer lengths of asbestos fibers seem to be a greater health hazard than shorter fibers. When inhaled into the lungs, asbestos fibers cause scars (pulmonary fibrosis) and may restrict lung movements (restrictive lung disease). Breathing in asbestos can also cause the two membranes covering your lungs (the pleura) to thicken.
The more you are exposed to asbestos fibers, the greater your risk of developing asbestosis or other asbestos-related conditions. You can be at risk for asbestos exposure if you work as a janitor, welder, electrician, plumber, construction worker, carpenter, boilermaker, insulation installer, shipbuilder, miner, or railway worker, or if you're involved in the manufacturing of textiles. Construction work, demolition, renovation, and jobs that require the cutting, filing, sanding, or scraping of asbestos-containing materials may all put you at a high risk.
