One in five high schoolers use e-cigarettes to vape marijuana: US study - Nearly one-fifth of high school students who use e-cigarettes have tried putting pot into the devices, according to a survey of nearly 4,000 Connecticut teenagers.
The researchers have said that it is the first evidence that teenagers are using electronic cigarettes to vaporize cannabis.
E-cigarettes vaporize, rather than burn, allowing users to inhale nicotine (or THC, the active ingredient in cannabis) without taking in the carcinogens that are caused by combustion.
Last month, a study released indicated U.S. teens who try electronic cigarettes might be more than twice as likely to move on to smoking conventional cigarettes than those who have never tried the devices.
About two million middle- and high-school students tried e-cigarettes in 2014, triple the number of teen users in 2013, according to the U.S. Centers for Disease Control and Prevention (CDC).
Meghan Morean of Oberlin College, Ohio, and colleagues found that of students who had used e-cigarettes, 18 percent had used them to vaporize cannabis in some form, including hash oil and wax infused with tetrahydrocannabinol (THC), the main psychoactive cannabis ingredient.
According to the researchers, high school students were 27 times as likely to use e-cigarettes to vaporize cannabis as adults who use e-cigarettes.
It was also found that male and younger students were more likely to use e-cigarettes to vaporize cannabis than female and older students, however socioeconomic status was not a factor. Use differed among the five schools involved, possibly because of different policies.
The study has been published in the journal Pediatrics.