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For years , people have debated whether legalizing marijuana could lead to an increase in the use of the drug among teens . But a newfangled subject field find that ’s not the case , at least for laws that legalizemedical marijuana .

The field found that teen use of marijuana does n’t seem to change when the drug is legalized for medical intent .

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" For now , there is likely no footing for the argument that legitimatise aesculapian marijuana has increased teens ' use of the drug , " senior work author Deborah Hasin , a prof of epidemiology at Columbia ’s Mailman School of Public Health , tell in a statement .

However , Hasin tell that future inquiry should continue to explore this doubtfulness , because the situation may switch as medical marihuana becomes more commercialized and as more states legalize marijuana for recreational purposes . [ Mixing the Pot ? 7 Ways Marijuana Interacts with medication ]

For the fresh study , the research worker analyzed info from 11 previous studies that await atteen marijuana usefrom 1991 to 2014 .

marijuana, joint

The researcher looked at teen pot use in the past calendar month , before and after marijuana laws change in various states . They then compared that drift with trends in land where the drug was n’t legalized .

Overall , teens ' usage of the drug did not change after aesculapian - ganja laws were passed in their body politic .

In 1996 , California became the first state to legalize aesculapian marijuana , and today , 29 state and the District of Columbia let medical marijuana .

a teenage girl takes a pill

Although the new study did n’t find an increase in overall teenaged use of marijuana , more research is take to front at other possible effects of legalization , such as change in day-by-day utilisation of the drug among those who already use marijuana and the development ofmarijuana dependance , the researchers said .

The subject field is published online today ( Feb. 22 ) in the journal Addiction .

Original clause onLive Science .

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