Vaporized cannabis can be many times stronger than marijuana that is smoked. Nearly one in five high school students who said they used electronic cigarettes to vaporize nicotine also used them to vaporize pot, according to a survey of nearly 4,000 Connecticut teens.
The study, published in the journal Pediatrics, is the first scientific evidence that teens are using electronic cigarettes to vaporize cannabis, the researchers said.
The paper by Meghan Morean of Oberlin College in Ohio and colleagues raises concerns that the rising popularity of e-cigarettes may encourage teens to use the devices to vaporize cannabis, potentially exposing them to higher concentrations of tetrahydrocannabinol or THC, the main psychoactive ingredient in marijuana.
CBC News – Sep 7, 2015.