Chronic obstructive pulmonary disease (COPD) involves two lung diseases, chronic bronchitis and emphysema, that often coexist. Both diseases cause airflow obstructions and disrupt normal breathing. The quality of life of COPD sufferers decreases with time and quitting smoking is a must in order to improve the odds. No drugs have been found to prevent or reverse the lung damage and decline in its functioning. On this forum, you can find COPD-related topics!