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s2smodern

Based on the results of a cross-sectional study showing an association between using e-cigarettes and reporting that one has ever been told they have COPD (chronic obstructive lung disease), a number of researchers have essentially concluded that vaping causes COPD, and one researcher is telling the public that use of e-cigarettes increases one's risk of COPD just like cigarettes. There is absolutely no way one can conclude, or even speculate, based on the results of this cross-sectional study, that vaping is a cause of chronic obstructive lung disease. [...]