A longitudinal study of 460,000 teenagers found adolescent cannabis use was linked to higher risks of later bipolar, psychotic, anxiety and depression diagnoses. Separate research and expert guidance say THC effects, especially long term, still need more study.
A longitudinal study of 460,000 teenagers found that adolescent cannabis use increases the risk of developing bipolar and psychotic disorders by twofold, as well as raising risks for depression and anxiety.
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