Passive Smoking Could Cause 1.9 Million Excess Deaths From COPD In China

Exposure to passive smoking is linked to increased prevalence of chronic obstructive pulmonary disease (COPD). This association could cause 1.9 million excess deaths* among never smokers in China. The scientists found that people exposed to high levels of passive smoking (equivalent to 40 hours a week for more than five years) were on average 48% more likely to develop COPD.