As e-cig use has soared among America's teens, so too has the number vaping marijuana, two new reports indicate.
devices containing THC, the main psychoactive ingredient in pot, according to the U.S. Centers for Disease Control and Prevention.
For her study, Dai and colleagues gathered data on 38,000 students in grades six through 12 who took part in the National Youth Tobacco Survey. In the other study, researchers were led by Richard Miech, a research professor at the University of Michigan Institute of Social Research. The team used data from the 2018 and 2019 Monitoring the Future surveys of eighth, 10th and 12th graders.In addition to the increase in vaping among 12th graders, the investigators found that 4% of eighth graders said they vaped marijuana in 2019 -- a jump from less than 3% the previous year.
In the second, marijuana vaping is supplementing marijuana smoking. It could be that teens who use marijuana are continuing to smoke it as before, but they are also vaping it in locations where they can't smoke it, Miech said.
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