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It's Lindsay Smith Rogers. Today, cannabis and teens.

I speak with Johannes Thruel, a mental health and addiction researcher at the Johns

Hopkins Bloomberg School of Public Health, but a recent study he co-authored looking into how

cannabis use disorder among youths could elevate risks for psychiatric disorders later on.

Let's listen. Johannes Thruill, welcome back to public health on call. How are you? Good. Thank you so

much for having me back.

Sure. So today we are talking about cannabis use disorder among young people.

But first, would you give us a reminder about who you are and your work in this area?

Yeah, happy to. So my name is Johannes Thruill. I'm an associate professor in mental health here at the Bloomberg School.

And I'm a psychologist by training, mostly work in the space of addiction, digital and mobile health and technology use.

So you're the senior author on a new study that found a link between cannabis use disorder and young people and psychiatric

disorders. But let's first talk about what is cannabis use disorder. Yeah, so cannabis use

disorder is defined in the DSM-5, which is essentially the Bible for all kind of psychiatric

diagnoses. And when we talk about cannabis use disorder,

I always say that it is a pattern of cannabis use that leads to negative consequences in somebody's

life and essentially a kind of loss of control over use. So continued use despite negative consequences.

And in the DSM, there's a list of things that criteria that people have to meet.

Usually the minimum threshold is you have to meet two of those criteria over the past 12-month period.

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