https://www.eurekalert.org/pub_releases/2021-03/uom-vma022621.php
News Release 3-Mar-2021
University of Michigan
Adolescents who vape cannabis are at greater risk for respiratory symptoms indicative of lung injury than teens who smoke cigarettes or marijuana, or vape nicotine, a new University of Michigan study suggests.
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Adolescents who reported vaping marijuana were roughly twice as likely to report "wheezing and whistling" in the chest than those who did not. Current use of cigarettes, e-cigarettes and cannabis were associated with some respiratory symptoms, such as dry cough, but most associations were not significant after controlling for vaping cannabis.
The researchers also found that an asthma diagnosis was most strongly associated with symptoms of future lung injury than cigarettes, e-cigarettes, cannabis use and vaping cannabis.
One study limitation is that the researchers did not look at co-use of vaping cannabis and the use of cigarettes or e-cigarettes.
"Future studies need to assess if it is the combination of vaping both nicotine and cannabis that is creating so many respiratory issues," Veliz said. "It may be the combination of vaping cannabis along with smoking cigarettes is what leads to the high rates of respiratory symptoms among youthful marijuana vapers."
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