Study: E-cigarettes contain high concentrations of formaldehyde

E-cigarettes may not be a safe alternative to their traditional counterparts. New findings in a New England Journal of Medicine letter show e-cigarettes, when used at their highest voltage levels, can release vapor containing between five and 15 times as much formaldehyde as regular cigarettes.

Users who regularly expose their lungs to vapor containing formaldehyde would be at greater risk for lung cancer.

"I think this is just one more piece of evidence amid a number of pieces of evidence that e-cigarettes are not absolutely safe," Portland State University researcher David Peyton told NPR.

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