An observational study of 50 autistic children treated with CBD-rich cannabis oil found 60% showed improvement in behavioral symptoms, with aggression and self-injury showing the most response.
Parents of autistic children, developmental pediatricians, and autism researchers.
What the researchers found
60% of children showed clinical improvement on the CGI-I scale. Aggression improved in 68% and self-injurious behavior in 64%. Hyperactivity improved in 52%. Anxiety improved in 48%. Sleep improved in 44%. Most common adverse effects: increased appetite (22%), drowsiness (18%). Two patients discontinued due to worsening behavior.
Why it matters
Autism has few effective pharmacological treatments, especially for aggression and self-injury. While uncontrolled, this study adds to growing evidence that CBD-rich cannabis may help manage challenging autism behaviors.
The numbers in context
50 children; 60% improved overall; 68% improved aggression; 64% improved self-injury; 52% improved hyperactivity; 22% increased appetite; 18% drowsiness.
How the study worked
Prospective observational study of 50 children with autism spectrum disorder (ages 4-17) treated with CBD-rich cannabis oil (CBD:THC ratio 20:1) for 6 months. Clinical Global Impression and parent-rated behavioral scales.
What this study cannot tell us
No control group or blinding. Strong potential for placebo and expectation effects. Single product (20:1 CBD:THC). Parental reporting bias. 6-month duration may not capture long-term effects.
How to read the evidence
Prospective design with standardized measures is valuable, but lack of control group and blinding severely limits conclusions.
When this study was published
2025 observational study of CBD-rich cannabis oil in pediatric autism.
The bigger picture
Multiple observational studies now suggest cannabis may help some autistic children, but the field still lacks definitive RCTs. The consistent signal across studies strengthens the case for controlled trials.
Questions still open
- Would these results hold in a placebo-controlled trial?
- Which autistic children are most likely to respond to cannabis oil?
Common questions
Can cannabis help children with autism?
What type of cannabis is used for autism?
Read the original research
Evaluating the impact of cannabis oil for autistic children with and without concomitant medications: Insights from an open-label study.
Journal of psychopharmacology (Oxford, England), 2698811251332841
Citation
Treves, Nir; Dagan, Adi; Kohn, Elkana; Hazan, Ariela; Berkovitch, Matityahu; Abu-Kishk, Ibrahim; Agajani, Netanel; Barchel, Dana; Heyman, Eli; Lazinger, Mirit; Hartmann, Inbar; Stolar, Orit. (2025). Evaluating the impact of cannabis oil for autistic children with and without concomitant medications: Insights from an open-label study.. Journal of psychopharmacology (Oxford, England), 2698811251332841. https://doi.org/10.1177/02698811251332841
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