Asbestosis is a chronic, progressive scarring (fibrosis) of the lung tissue caused by inhaling asbestos fibers. Unlike mesothelioma, asbestosis is not cancer — but it is a serious, permanent lung disease that can severely impair breathing and shares the same cause.
What Asbestosis Is
When asbestos fibers are inhaled, they lodge deep in the lung tissue, where they cause chronic inflammation and scarring. Over years, this scarring stiffens the lungs and reduces their ability to transfer oxygen to the blood. Asbestosis typically develops after heavier, prolonged asbestos exposure and appears 10 to 40+ years afterward.
Symptoms
- Shortness of breath, at first with exertion and later at rest
- A persistent dry cough
- Chest tightness or pain
- Crackling sounds in the lungs when breathing in (heard by a doctor)
- Clubbing of the fingertips in advanced cases
- Reduced exercise tolerance and fatigue
Asbestosis is generally described as mild, moderate, or severe based on how much lung function is affected and how extensive the scarring appears on imaging.
Causes
Asbestosis is caused specifically by asbestos — it does not have other causes, which makes it a definitive marker of significant asbestos exposure. It was historically common among insulation workers, shipyard workers, boilermakers, and others with heavy occupational exposure.
Relationship to Cancer
Asbestosis itself is not cancer and does not “become” mesothelioma. However, the level of asbestos exposure that causes asbestosis also significantly raises the risk of mesothelioma and lung cancer — and people with asbestosis who smoke have a dramatically higher lung-cancer risk. For this reason, asbestosis patients require ongoing monitoring.
Management
There is no cure for the scarring, and it cannot be reversed. Treatment focuses on slowing progression and managing symptoms: smoking cessation, pulmonary rehabilitation, oxygen therapy, vaccines to prevent respiratory infections, and monitoring for complications.
If you were diagnosed with asbestosis, mesothelioma, or another asbestos-related disease and were exposed to asbestos at work, in the military, or in a building, you may be entitled to compensation through asbestos trust funds and civil litigation.
This information is educational, drawn from sources such as the American Cancer Society and National Cancer Institute, and is not medical advice. Consult your own physician about diagnosis and management.