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Stronger weed, higher risk? Potent THC linked to psychosis and addiction

A sweeping review of nearly 100 studies has raised concerns about the mental health impacts of high-potency cannabis products. Researchers found strong links to psychosis, schizophrenia, and cannabis use disorder, while results for anxiety and depression were mixed and sometimes contradictory. Although the findings confirm that higher THC concentrations pose risks, the evidence still isn’t clear enough to offer firm clinical guidance, leaving scientists calling for better-designed studies to fill the gaps.

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