Adolescent Cannabis and Mental Health in Teens: A Careful Reading of a Large New Study
A large 2026 cohort study found that adolescents reporting cannabis use were more likely to later receive diagnoses of psychotic, bipolar, depressive, and anxiety disorders. This Evidence Watch review explains what the paper actually shows, where the…
Placental Changes From Prenatal Cannabis Exposure Could Flag Higher Schizophrenia …
WHY IT MATTERS: Pregnant patients who have used cannabis, even early in pregnancy, may want to discuss this emerging research with their obstetric and psychiatric care teams when considering their child's long-term neurodevelopmental monitoring. CLINICAL…
Scientists are raising new concerns about marijuana use in teens – KPBS
WHY IT MATTERS: For parents and adolescents, this research reinforces that cannabis is not a low-risk substance during the teenage years, and decisions about use should be made with full awareness of the potential for lasting mental health consequences.…
Teenage Cannabis Users Twice as Likely as Non-Users to Develop Psychosis
A large study found that moderate cannabis use in adults over 40 was linked to larger brain volumes and better cognitive function, though experts caution more research is needed before drawing conclusions. A landmark longitudinal study published in JAMA…
Adolescent Cannabis Use and Psychosis Risk: What This Cohort Study Shows and What It Does Not
A clinician-guided review of a large cohort study examining adolescent past-year cannabis use and subsequent psychiatric diagnoses, including psychosis and bipolar disorder. This article explains what the study measures, what it does not measure, and why…
Cannabis and Psychiatric Disorders: 7 Truths They’re Not Telling You
What happens when science gets simplified into fear? A new genetic study of cannabis and psychiatric disorders went viral—but left the truth behind. This post separates data from dogma, debunking the fairy tale that cannabis causes madness with a scalpel…
Cannabis and Psychosis: 5 Reasons This Study Doesn’t Say What You Think
A new study shows a 5x rise in cannabis-linked psychosis hospitalizations—but is it the plant, or the policy? This blog pulls back the curtain on what’s really behind the numbers: vague diagnoses, missing context, and a health system still catching up.…
Ask CAI: Cannabis Answers Simplified
CAI tackles the public's cannabis mysteries with clear, reliable data. ? Try CAI for free:Ask CAI Also available at the bottom: CaplanCannabis.com Finding trustworthy answers about cannabis shouldn’t feel like…
Biphasic Effect of Cannabis: 5 Ways Cannabis Affects Your Brain Differently
Cannabis exerts fascinating biphasic effects on the brain, stimulating neural activity in the short term while triggering compensatory adaptations during chronic use. Recent findings from JAMA Psychiatry reveal reduced synaptic density in chronic users,…
Strong correlation between grey matter volume and striatal glutamate level in the brains of early psychosis patients who used cannabis
Association of cannabis with glutamatergic levels in patients with early psychosis: Evidence for altered volume striatal glutamate relationships in patients with a history of cannabis use in early psychosis In Summary: Psychosis is a debilitating but…