Author

K. Thiessen

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Open access Aug 2026

Frontostriatal interactions and socioenvironmental associations with alcohol and cannabis onset in the Adolescent Brain Cognitive Development Study

Adolescent substance use is a major public health concern due to increased risk of future physical and mental health conditions. Fronto-striatal functioning - particularly regarding inhibition and reward processing - may increase vulnerability to high-risk substance use. However, it remains unclear if these neurobiolog...

K. Thiessen, F. Breslin, K. Kerr · medRxiv · 0 citations

Open access Aug 2026

Adversity and brainAGE associations with age of first cannabis use in the Adolescent Brain Cognitive Development (ABCD) Study

Investigation of magnetic resonance imaging-derived neurodevelopmental cortical brain Age Gap Estimate and adverse life events as risk factors of early cannabis initiation suggest that while cortical brainAGE may be somewhat increase vulnerability to adolescent cannabis use in females, its contributions are modest at b...

K. Thiessen, Y. Yu, L. Schmid et al. · medRxiv · 0 citations

Open access Aug 2026

Crisis within a crisis: Risk factors of overdose among those with severe concurrent disorders.

To address the prolonged overdose crisis, findings suggest that integrated treatment of patients' polysubstance use, comorbidities, and social support is important for risk prevention.

M. Song, Zayed Shahjahan, K. Thiessen et al. · General Hospital Psychiatry · 0 citations