Harvard School of Public Health Study Finds E-Cigarettes Affect Airways, and Quickly

The electronic cigarettes marketed as a safer alternative to the real thing produce immediate changes in users' airways, a small study suggests. Researchers in Greece saw changes in the lung function of healthy smokers who puffed on an e-cigarette for just five minutes -- although it's not clear what the long-term result of those responses might be in regular e-cigarette users, the team reports in the journal Chest.