Using data from the ABCD study, researchers found that associations between prenatal cannabis exposure and mental health problems persisted from childhood into early adolescence.
What the researchers found
Researchers used data from the Adolescent Brain Cognitive Development (ABCD) study, one of the largest longitudinal studies of brain development in the United States, to examine whether the association between prenatal cannabis exposure and mental health problems endures as children age.
The analysis found that children whose mothers used cannabis during pregnancy showed associations with greater mental health burden. Critically, these associations were not limited to early childhood but persisted into early adolescence.
This persistence is important because it suggests prenatal cannabis exposure may have lasting effects on neurodevelopment rather than transient impacts that children grow out of as their brains mature.
Why it matters
Cannabis is the most commonly used illicit substance during pregnancy, and its use has increased with legalization. Demonstrating that prenatal exposure associations persist into adolescence, rather than fading with development, strengthens the case for counseling pregnant individuals about potential long-term risks.
The numbers in context
Data came from the ABCD study, one of the largest US longitudinal studies of adolescent brain development. Associations between prenatal cannabis exposure and psychopathology persisted from childhood into early adolescence.
How the study worked
This was a longitudinal cohort analysis using the ABCD study, which follows thousands of children across the United States from ages 9-10 into adolescence. Researchers assessed prenatal cannabis exposure through maternal report and measured mental health outcomes using validated psychopathology assessments at multiple time points.
What this study cannot tell us
Prenatal cannabis exposure was based on maternal self-report, which may underestimate true exposure. The study measured associations and cannot prove that cannabis exposure caused the mental health outcomes. Confounding factors like other substance use, socioeconomic status, and postnatal environment are difficult to fully control.
How to read the evidence
A large longitudinal cohort study with strong methodology, though observational design limits causal inference about prenatal cannabis exposure effects.
The bigger picture
As cannabis legalization expands and THC potency increases, understanding the developmental consequences of prenatal exposure becomes more urgent. This study adds to a growing body of evidence suggesting that cannabis use during pregnancy may have neurodevelopmental effects that do not simply resolve as children mature.
Common questions
Did prenatal cannabis exposure cause mental health problems?
What is the ABCD study?
Read the original research
Association of Mental Health Burden With Prenatal Cannabis Exposure From Childhood to Early Adolescence: Longitudinal Findings From the Adolescent Brain Cognitive Development (ABCD) Study.
JAMA pediatrics, 176(12), 1261-1265
Citation
Baranger, David A A; Paul, Sarah E; Colbert, Sarah M C; Karcher, Nicole R; Johnson, Emma C; Hatoum, Alexander S; Bogdan, Ryan. (2022). Association of Mental Health Burden With Prenatal Cannabis Exposure From Childhood to Early Adolescence: Longitudinal Findings From the Adolescent Brain Cognitive Development (ABCD) Study.. JAMA pediatrics, 176(12), 1261-1265. https://doi.org/10.1001/jamapediatrics.2022.3191