What Research Says About Prenatal Cannabis Exposure and Child Brain Development
A review of clinical and preclinical evidence found that prenatal cannabis exposure consistently raised ADHD risk in children, while findings on cognition, autism, and learning remained inconclusive.
Quick Facts
What This Study Found
Children exposed to cannabis prenatally consistently showed higher ADHD risk compared to unexposed children. No significant associations emerged with anxiety or depression. Findings on cognition, autism spectrum disorder, and learning were inconsistent across studies. Higher THC concentrations were associated with more aggressive behavior in males.
Key Numbers
ADHD risk was consistently elevated across studies. Higher THC concentrations linked to more aggressive behavior in males specifically. No significant associations found for anxiety and depression.
How They Did This
Narrative review searching PubMed for clinical and preclinical studies on neurodevelopmental outcomes following in utero and early childhood cannabis exposure. Prioritized recent clinical studies and categorized findings into cognitive measures and mental health diagnoses.
Why This Research Matters
As cannabis use during pregnancy increases, understanding which neurodevelopmental outcomes have consistent evidence helps clinicians provide accurate, evidence-based guidance rather than blanket warnings.
The Bigger Picture
The prenatal cannabis research landscape is messy, with most outcomes showing mixed results. ADHD stands out as the most consistent finding, which aligns with what we know about how cannabinoids interact with developing brain circuitry involved in attention and impulse control.
What This Study Doesn't Tell Us
Narrative review, not a systematic review or meta-analysis. Inconsistent exposure measurements and cognitive assessment tools across studies make direct comparison difficult. Most studies cannot account for THC potency or frequency of use.
Questions This Raises
- ?Why is ADHD risk more consistently affected than other outcomes?
- ?Does the timing of exposure during pregnancy matter?
- ?How do today's higher-potency products compare to those used in older studies?
Trust & Context
- Key Stat:
- ADHD risk consistently elevated across studies of prenatal cannabis exposure
- Evidence Grade:
- Moderate: narrative review synthesizing multiple studies, but not a systematic review and limited by inconsistency across the underlying evidence
- Study Age:
- Published in 2025
- Original Title:
- Neurodevelopmental effects of perinatal exposure to cannabis on progeny: A narrative review.
- Published In:
- Drug and alcohol dependence reports, 16, 100372 (2025)
- Authors:
- Azubuike, Chidimma Doris, Grundmann, Oliver(2), Goodin, Amie J(3)
- Database ID:
- RTHC-05988
Evidence Hierarchy
Summarizes existing research without a strict systematic method.
What do these levels mean? →Frequently Asked Questions
Is prenatal cannabis exposure linked to autism?
The evidence is inconsistent. Some studies found associations while others did not. This review concluded the relationship remains inconclusive.
Why is ADHD the most consistent finding?
The review found ADHD risk was consistently elevated across multiple studies, though it did not establish why. The endocannabinoid system plays a role in developing attention and impulse control circuits, which may explain the vulnerability.
Read More on RethinkTHC
Cite This Study
https://rethinkthc.com/research/RTHC-05988APA
Azubuike, Chidimma Doris; Grundmann, Oliver; Goodin, Amie J. (2025). Neurodevelopmental effects of perinatal exposure to cannabis on progeny: A narrative review.. Drug and alcohol dependence reports, 16, 100372. https://doi.org/10.1016/j.dadr.2025.100372
MLA
Azubuike, Chidimma Doris, et al. "Neurodevelopmental effects of perinatal exposure to cannabis on progeny: A narrative review.." Drug and alcohol dependence reports, 2025. https://doi.org/10.1016/j.dadr.2025.100372
RethinkTHC
RethinkTHC Research Database. "Neurodevelopmental effects of perinatal exposure to cannabis..." RTHC-05988. Retrieved from https://rethinkthc.com/research/azubuike-2025-neurodevelopmental-effects-of-perinatal
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.