Archive note — September 2026: This 2014 column responds to early reporting on formaldehyde and other emissions. Its statements about “safe enough,” harmlessness, and specific voltage settings are historical opinion, not current health guidance. The CDC says e-cigarette aerosol can contain harmful or potentially harmful substances, including cancer-causing chemicals and tiny particles, and that the short- and long-term health effects remain under study. See the CDC’s current health-effects guidance.
Original May 2014 editorial
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