Teen drug abuse in Japan

https://japantoday.com/category/national/refiling-nonprescription-drug-abuse-highest-among-teens-japan-gov't-study

I can say I don’t think I’ve ever seen a drunk or impaired teenager in all my years in Japan. Definitely don’t see any zombies walking around here like in the streets back home.
This news is a bit surprising that they even had a study on it.