Marijuana stays unlawful in all US states for folks underneath the age of 18.
Youngsters are much less seemingly to make use of cannabis in US states the place the drug has been legalised, a brand new examine suggests.
Researchers at Montana State College in Bozeman, Montana, analysed annual nationwide Youth Threat Behaviour Surveys from 1993 by to 2017.
The reviews included questions on marijuana use and listed responses from 1.4m highschool college students.
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