A review of pediatric cannabis concerns found that legalization has increased accidental childhood exposures, prenatal exposure concerns persist, and while CBD may help pediatric epilepsy, rigorous trials are needed before widespread use.
Parents, pediatricians, and policymakers concerned about cannabis and children.
Accidental childhood cannabis exposures increased after legalization, particularly from edible products
What the researchers found
The review identified cannabis legalization's impact on children across four developmental stages.
Prenatal: Cannabis remains one of the most commonly used substances during pregnancy, with increasing use as legalization normalizes cannabis. Concerns exist about effects on fetal brain development, though evidence is mixed.
Early childhood: Accidental ingestion of cannabis edibles by young children has increased substantially in legalization states. Edible products (gummies, cookies, brownies) are particularly attractive and accessible to children.
Adolescence: Concerns about increased availability, normalization of use, and higher-potency products. Data on whether legalization increases adolescent use is mixed.
Medical use: CBD shows promise for pediatric epilepsy, but the review emphasizes the need for rigorous clinical trials rather than reliance on unregulated products with variable composition and potency.
Why it matters
Cannabis legalization policies are primarily designed with adults in mind. This review systematically catalogs the pediatric consequences that are often overlooked in policy debates, from poison control calls about toddlers who ate cannabis edibles to questions about prenatal brain development.
The numbers in context
Cannabis is one of the most commonly used substances in pregnancy. Accidental exposures in young children increased with legalization. CBD for pediatric epilepsy requires clinical trials for evidence.
How the study worked
Narrative review of pediatric cannabis concerns across the developmental spectrum, from prenatal through adolescence, including medical use.
What this study cannot tell us
Narrative review without systematic methodology. The evidence on many pediatric concerns is limited or mixed. The review was published before Epidiolex's FDA approval, so the CBD-epilepsy landscape has changed. Quantitative data on the magnitude of pediatric impacts is still developing.
How to read the evidence
Moderate evidence from a narrative review synthesizing available pediatric safety data.
When this study was published
Published in 2017. Pediatric cannabis safety has received increasing attention since.
The bigger picture
The "unintended consequences" framing highlights a gap in cannabis policy: most legalization frameworks focus on adult access, taxation, and criminal justice reform. Child safety (child-resistant packaging, marketing restrictions, prenatal screening) has often been an afterthought, addressed only after problems emerge.
Questions still open
- Have child-resistant packaging requirements reduced accidental exposures? Is prenatal cannabis exposure associated with measurable developmental consequences? Should pediatric considerations be central to cannabis legalization policy design?
Common questions
Has cannabis legalization increased the risk to children?
Is CBD safe for children with epilepsy?
Read the original research
Pediatric Concerns Due to Expanded Cannabis Use: Unintended Consequences of Legalization.
Journal of medical toxicology : official journal of the American College of Medical Toxicology, 13(1), 99-105
Citation
Wang, George Sam. (2017). Pediatric Concerns Due to Expanded Cannabis Use: Unintended Consequences of Legalization.. Journal of medical toxicology : official journal of the American College of Medical Toxicology, 13(1), 99-105. https://doi.org/10.1007/s13181-016-0552-x
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