CBD-Rich Cannabis Reduced Anxiety and Repetitive Behaviors in Autistic Children Over 6 Months
Autistic children showed reduced anxiety and repetitive behaviors after 6 months of CBD-rich cannabis treatment, with reduced panic and separation anxiety predicting subsequent decreases in repetitive behaviors.
Quick Facts
What This Study Found
Significant reductions in overall anxiety and specific subtypes (general, social, panic, separation) after 6 months. Repetitive behaviors also improved, including compulsive, ritualistic, and sameness behaviors. Reduced panic and separation anxiety predicted subsequent decreases in sameness behaviors.
Key Numbers
65 autistic children ages 5-12. Significant reductions in overall anxiety and 4 of 5 anxiety subtypes. Significant improvement in total repetitive behaviors and 3 subtypes (compulsive, ritualistic, sameness). Reduced panic/separation anxiety predicted reduced sameness behaviors.
How They Did This
Open-label study of 65 autistic children (ages 5-12) receiving CBD-rich cannabis. Parents completed validated anxiety (SCARED) and repetitive behavior (RBS-R) assessments at baseline, 3 months, and 6 months.
Why This Research Matters
Anxiety is one of the most common co-occurring conditions in autism, and it may drive some repetitive behaviors. This study suggests CBD-rich cannabis could address both, with anxiety reduction leading to behavior improvement.
The Bigger Picture
The finding that anxiety reduction precedes behavior improvement supports the theoretical link between anxiety and repetitive behaviors in autism. If validated, this suggests treating anxiety could be a key pathway for improving core autism symptoms.
What This Study Doesn't Tell Us
Open-label design with no placebo or control group. Only 65 participants. Parent-reported outcomes subject to expectation bias. No information on adverse effects in the abstract.
Questions This Raises
- ?Would a placebo-controlled trial confirm these findings?
- ?Is CBD directly reducing repetitive behaviors, or only doing so indirectly through anxiety reduction?
- ?What is the optimal dose and duration?
Trust & Context
- Key Stat:
- Reduced panic and separation anxiety predicted subsequent decreases in repetitive behaviors
- Evidence Grade:
- Open-label study without controls; preliminary because placebo response in parent-reported autism outcomes can be substantial.
- Study Age:
- 2025 publication with 6-month treatment data
- Original Title:
- Effects of Medical Cannabis Treatment for Autistic Children on Anxiety and Restricted and Repetitive Behaviors and Interests: An Open-Label Study.
- Published In:
- Cannabis and cannabinoid research, 10(4), 537-548 (2025)
- Authors:
- David, Ayelet(3), Stolar, Orit(6), Berkovitch, Matitiahu(7), Kohn, Elkana, Hazan, Ariela, Waissengreen, Danel, Gal, Eynat
- Database ID:
- RTHC-06301
Evidence Hierarchy
Watches what happens naturally without intervening.
What do these levels mean? →Frequently Asked Questions
How does anxiety relate to repetitive behaviors in autism?
Anxiety and repetitive behaviors often co-occur in autism. Some theories suggest repetitive behaviors serve as a coping mechanism for anxiety. This study found that when CBD-rich cannabis reduced anxiety, repetitive behaviors also decreased.
Is this enough evidence to try CBD for an autistic child?
The authors explicitly recommend double-blind, placebo-controlled studies before drawing clinical conclusions. Open-label studies cannot rule out placebo effects, which can be significant in autism research.
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Cite This Study
https://rethinkthc.com/research/RTHC-06301APA
David, Ayelet; Stolar, Orit; Berkovitch, Matitiahu; Kohn, Elkana; Hazan, Ariela; Waissengreen, Danel; Gal, Eynat. (2025). Effects of Medical Cannabis Treatment for Autistic Children on Anxiety and Restricted and Repetitive Behaviors and Interests: An Open-Label Study.. Cannabis and cannabinoid research, 10(4), 537-548. https://doi.org/10.1089/can.2024.0001
MLA
David, Ayelet, et al. "Effects of Medical Cannabis Treatment for Autistic Children on Anxiety and Restricted and Repetitive Behaviors and Interests: An Open-Label Study.." Cannabis and cannabinoid research, 2025. https://doi.org/10.1089/can.2024.0001
RethinkTHC
RethinkTHC Research Database. "Effects of Medical Cannabis Treatment for Autistic Children ..." RTHC-06301. Retrieved from https://rethinkthc.com/research/david-2025-effects-of-medical-cannabis-2
Access the Original Study
Study data sourced from PubMed, a service of the U.S. National Library of Medicine, National Institutes of Health.
This study breakdown was produced by the RethinkTHC research team. We analyze and report published research findings without making health recommendations. All interpretations are based solely on the published abstract and study data.