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Genes Linked to Cannabis Use and ADHD Risk

10/22/2025

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Summary

Story summary

Genetic factors modestly influence cannabis use, explaining 13% of trying it and 6% of its frequency, in a study by Western University and UC San Diego.
Researchers identified two genes, CADM2 and GRM3, linked to cannabis use and health traits.
Findings appeared in Molecular Psychiatry.
A separate study found a causal link between reduced resting alpha-band EEG activity and ADHD risk, implying genetic predispositions may influence its development.

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Story summary

Genetic factors modestly influence cannabis use, explaining 13% of trying it and 6% of its frequency, in a study by Western University and UC San Diego.
Researchers identified two genes, CADM2 and GRM3, linked to cannabis use and health traits.
Findings appeared in Molecular Psychiatry.
A separate study found a causal link between reduced resting alpha-band EEG activity and ADHD risk, implying genetic predispositions may influence its development.