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kleinbl00 · 3460 days ago · link · · parent · post: Large UK study shows no relationship between moderate adolescent cannabis use and exam results or IQ
I was expecting "heavy use" to be something stupid like "a joint a week." Nope - "heavy use" is "has smoked more than 50 times by the age of 15." I would have guessed that might be an indicator of poor academic performance even without a longitudinal study to back me up. Thanks for sharing this.