In Australia, COPD usually occurs in people who have smoked or continue to smoke cigarettes. However, it can be caused by environmental or genetic factors.
Other known causes of COPD include:
- Passive smoking, especially during infancy when the lungs are still developing
- Exposure to occupational dusts and chemicals. Miners and livestock farmers are at heightened risk of COPD.
- Environmental agents, including indoor and outdoor pollution, however this is more a problem in the developing world.
- Women may be a t greater risk of environmental agents than men due to the fact that they generally have smaller lungs and more sensitive airways.
- A small proportion of COPD is as a result of a genetic deficiency of the protein alpha-1 antitrypsin, a substance whose role is to protect the lung from damage. airways.
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