A new study found that teens who vape cannabis reported more symptoms of lung injury than those who smoked cigarettes, marijuana or e-cigarettes, though one expert cautions the study has some limitations.
The study conducted by researchers at University of Michigan, looked at self-reported symptoms such as wheezing and whistling in the chest and dry cough from a sample of almost 15,000 adolescents between the ages 12 and 17 from the Population Assessment of Tobacco and Health Study.