Smoking is one of the most important causes of chronic
respiratory diseases, including COPD. Smoking cessation is the only approach that can effectively slow the progression of COPD and mitigate its clinical course. It can delay the impairment of pulmonary function and significantly alleviate the symptoms of coughing, excess phlegm, and asthma, thereby improving patient health status. Long-term smoking cessation has been found to improve the natural course of COPD and to mitigate the deterioration of lung function in patients with COPD. Thus, we included smoking cessation as a key component of our program. After the 4-y health management program, smoking rates decreased markedly.