Some of the liquid flavorings heated in e-cigarettes appear to break down into potentially dangerous compounds, researchers say.
It’s not yet clear what this might mean for the health of electronic cigarette users.
Whatever the case, e-cigarettes are popular. A 2015 federal survey suggested that 4 percent of U.S. adults use the devices on a regular basis. Nearly 13 percent say they’ve tried them.
But what exactly is in the vapor from e-cigarettes? According to a statement provided by the American Chemical Society, research suggests that the heat converts the “e-liquids” into toxic compounds.
The researchers reported that just one puff from one of the e-cigarettes with flavored e-liquid produced levels of toxic compounds considered unhealthy.
Vapor from unflavored e-liquids had much lower levels of the compounds, the researchers found.
Their study was published Nov. 30 in the journal Environmental Science & Technology.
For more about e-cigarette use, visit the U.S. Food and Drug Administration.