A new study suggests a type of e-cigarette called a “tank system” can produce some carcinogens also found in regular cigarettes, and at similar levels.
While e-cigarettes do not burn tobacco to create new chemicals, including cancer-causing ones, some brands get so hot they can produce carcinogens, The New York Times reports.
The study found tank systems produce formaldehyde, known to be a carcinogen. Formaldehyde is formed when liquid nicotine and other ingredients are subjected to high temperatures. The findings will appear later this month in Nicotine and Tobacco Research.