The effects of long-term exposure to asbestos typically don't show up for 10 to 40 years after initial exposure. Asbestosis signs and symptoms can include:
- Shortness of breath
- A persistent, dry cough
- Loss of appetite with weight loss
- Fingertips and toes that appear wider and rounder than normal (clubbing)
- Chest tightness or pain
When to see a doctor
If you have a history of exposure to asbestos and you're experiencing increasing shortness of breath, talk to your doctor about the possibility of asbestosis.
If you are exposed to high levels of asbestos dust over a long period of time, some of the airborne fibers can become lodged within your alveoli — the tiny sacs inside your lungs where oxygen is exchanged for carbon dioxide in your blood. The asbestos fibers irritate and scar lung tissue, causing the lungs to become stiff. This makes it difficult to breathe.
As asbestosis progresses, more and more lung tissue becomes scarred. Eventually, your lung tissue becomes so stiff that it can't contract and expand normally.
Smoking cigarettes appears to increase the retention of asbestos fibers in the lungs, and often results in a faster progression of the disease.
People who worked in mining, milling, manufacturing, installation or removal of asbestos products before the late 1970s are at risk of asbestosis. Examples include:
- Asbestos miners
- Aircraft and auto mechanics
- Boiler operators
- Building construction workers
- Railroad workers
- Shipyard workers
- Workers removing asbestos insulation around steam pipes in older buildings
In general, it's safe to be around materials that are made with asbestos as long as the asbestos fibers are contained. This prevents them from getting into the air.
If you have asbestosis, you're at increased risk of developing lung cancer — especially if you smoke or have a history of smoking.
July 13, 2016
- What are asbestos-related lung diseases? National Heart, Lung, and Blood Institute. http://www.nhlbi.nih.gov/health/dci/Diseases/asb/asb_all.html. Accessed June 17, 2016.
- Asbestosis. AskMayoExpert. Rochester, Minn.: Mayo Foundation for Medical Education and Research; 2016.
- Learn about asbestos. U.S. Environmental Protection Agency. https://www.epa.gov/asbestos/learn-about-asbestos#asbestos. Accessed June 17, 2016.
- Broaddus VC, et al., eds. Pneumoconioses. In: Murray & Nadel's Textbook of Respiratory Medicine. 6th ed. Philadelphia, Pa.: Saunders Elsevier; 2016. http://www.clinicalkey.com. Accessed June 17, 2016.
- Goldman L, et al., eds. Occupational lung disease. In: Goldman-Cecil Medicine. 25th ed. Philadelphia, Pa.: Saunders Elsevier; 2016. http://www.clinicalkey.com. Accessed June 17, 2016.
- King TE. Asbestosis. http://www.uptodate.com/home. Accessed June 17, 2016.
- Sen R. Working with asbestos and the possible health risks. Occupational Medicine. 2015;65:6.
- Roggli VL, et al. Pathology of asbestosis — An update of the diagnostic criteria: Report of the asbestosis committee of the College of American Pathologists and Pulmonary Pathology Society. Archives of Pathology and Laboratory Medicine. 2010;134:462.
- Ferri FF. Asbestosis. In: Ferri's Clinical Advisor 2017. Philadelphia, Pa.: Mosby Elsevier; 2016. https://www.clinicalkey.com. Accessed June 17, 2016.
- What is COPD? National Heart, Lung, and Blood Institute. http://www.nhlbi.nih.gov/health/dci/Diseases/Copd/Copd_WhatIs.html. Accessed June 17, 2016.