Beibei Song and colleagues’ new paper, Impact of electronic cigarette usage on the onset of respiratory symptoms and COPD among Chinese adults, finds that e-cigarettes and cigarettes pose similar risks for causing respiratory symptoms and chronic obstructive disease (COPD) in Chinese adults. Dual use is worse than using either product alone. This is a veryContinue reading “5 year longitudinal study finds e-cigs and cigs have similar risks for respiratory disease and COPD; dual use is worse”