Smoking is the leading cause of many chronic respiratory diseases, particularly COPD and emphysema.
Indoor air pollution caused by mould, dampness, tobacco smoke, smoke from home cooking, heating fuels, or burning of wood.
Environmental pollution such as air pollution from car emissions, occupational dusts and chemicals, and burning fossil fuels can irritate the respiratory tract and contribute to chronic respiratory diseases.
Occupational hazards such as dust, chemicals, and fumes: Working in industries such as construction, mining, and agriculture can increase your risk of developing chronic respiratory diseases.
Low birth weight, poor nutrition, or acute respiratory infections in early childhood can all play a role in the development of chronic respiratory diseases.
Allergens such as pollen, mould, and pet dander can exacerbate chronic respiratory diseases. Allergic reactions can lead to chronic inflammation of the airways, and persistent respiratory symptoms.