Is passive smoking exposure associated with increased risk of COPD in never smokers?
In this population-based sample of never smokers, ETS was independently associated with COPD. The association was stronger for ETS in multiple settings. ETS in multiple settings was, after age, the strongest risk factor for COPD and comparable to personal smoking of up to 14 cigarettes/d in comparable materials. The findings strongly advocate measures against smoking in public places.
SGB may depress immune system activity for a short time, as reflected in the T-cell activation response.