College students' marijuana use at 30-year high

ABC News chief medical correspondent Dr. Jennifer Ashton shares what you need to know from the University of Michigan study.
1:23 | 09/05/18

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Transcript for College students' marijuana use at 30-year high
a new report this morning showin more college age kids than ever aresing marijuana. Three Dr. Ashton ihere and, doc, what kind of numbers talkg about? Righto the report. Th numbers are prettysing he this showed that clege E studentsreported Ung majuana ihe last year. Compare that t33% which ported bindrinking for this is that the number that report perceiving ais regular marijuana use is Dow 27%. It used to be a as 75%. An 13% of noncollege age use are usingly so we're taking the pul O just how many peoplehe collegege group are using Mariana. Fewer young adultshink it I risky. Right,d, sten,re more questions on that Mally answers now. We are talking about recreati not medical use. We don't know howhis compares to alc use and obviously if smoked it does affect the brainungs. What should they tell their kids? Ask, listen and learn and we all need to educate course as marijuana now because this is really L prohibiti era. Onmarijuana. Cerintatese legalized , medicaluse, as well. Doc, THA you very much and we'll be right back. Good morng.

This transcript has been automatically generated and may not be 100% accurate.

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