Smoking is the primary cause of COPD.
In general, the main risk factors are cigarette smoke as well as all aggressive substances which may be present in the workplace.
The main causes which trigger COPD are therefore:
Article drafted under the supervision of Professor Gérard Huchon, Head of Pneumology at the Hôtel-Dieu hospital in Paris and Chairman of the Comité National de Lutte contre les Maladies Respiratoires.
Sources: Chronic respiratory diseases in developing countries: the burden and strategies for prevention and management (WHO Bulletin - collection of articles published in 2002).