Smokers who opt for electronic or "e-cigarettes," thinking it is a safer choice, could be at risk for a debilitating lung disease.
Researchers say most flavored e-cigs contain a chemical called diacetyl. It has been linked to a crippling respiratory disease called obliterative bronchiolitis, or "popcorn lung."
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The disease first appeared in workers who inhaled artificial butter flavoring from microwave popcorn.
The news is concerning to many health experts because of the popularity of e-cigs with young adults between the ages of 18 and 24.