Researchers are uncovering the truth associated with vaping -- the increasingly-popular alternative to smoking cigarettes.
Researchers Monday said teenagers who try vaping are poisoning themselves with many of the same chemicals that make traditional cigarettes so deadly.
Tests on teens showed those who smoke tobacco-based cigarettes had the highest levels of these chemicals in their bodies, but those who vape e-cigarettes also have higher levels of the cancer-causing chemicals than nonsmokers, the team at the University of California, San Francisco, found.
Researchers tested teens' urine and saliva and asked questions about cigarette use.
Those who used both types of cigarette had significantly higher levels of dangerous chemicals, including acrylonitrile, acrolein, propylene oxide, acrylamide and crotonaldehyde, the team reported.
And those who used only e-cigarettes had much higher levels than those who used neither product.