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COPD and tobacco smoke.
1Moroccan Society of Allergology and Clinical Immunology, Casablanca, Morocco. bartalmoh@menara.ma
Summary
Smoking causes chronic obstructive pulmonary disease (COPD) through inflammation and lung damage. Quitting smoking is the most effective way to reduce COPD risk factors and improve lung function.
Area of Science:
- Pulmonology
- Environmental Health
Background:
- Chronic obstructive pulmonary disease (COPD) is a growing global health concern characterized by airway inflammation.
- Active and passive smoking, even in utero, are primary risk factors, with individual susceptibility influencing disease development.
Purpose of the Study:
- To elucidate the mechanisms underlying COPD development and progression.
- To highlight the impact of smoking cessation on COPD management and patient outcomes.
Main Methods:
- Review of existing literature on COPD pathogenesis.
- Analysis of the effects of tobacco smoke on respiratory system components.
Main Results:
- Tobacco smoke triggers persistent inflammation, protease-antiprotease imbalance, oxidant-antioxidant imbalance, and impaired repair mechanisms.
- These processes lead to mucus hypersecretion, alveolar destruction, and pulmonary fibrosis, with earlier smoke exposure correlating with greater lung function decline.
- COPD patients harbor pathogens, increasing infection risk and exacerbations, which further worsen lung function.
Conclusions:
- Smoking cessation is the single most effective and cost-effective strategy to mitigate COPD risk factors.
- Quitting smoking reduces hospitalizations, slows lung function decline, improves quality of life, and enhances FEV1, especially when initiated earlier.