Prenatal exposure to multiple substances, including cannabis, increased childhood ADHD risk
In a large birth cohort, prenatal opioid exposure carried the highest ADHD risk, and the combination of opioids with cannabis or alcohol further increased risk beyond individual substances alone.
Quick Facts
What This Study Found
Opioid exposure during pregnancy had the highest adjusted hazard ratio for ADHD (2.19). When accounting for all substances simultaneously, opioid-cannabis interaction produced 1.42 times higher risk and opioid-alcohol interaction produced 1.15 times higher risk. 24.2% of mothers reported using at least one substance during pregnancy.
Key Numbers
3,138 children, median follow-up 10 years. 15.5% had ADHD. 24.2% of mothers used at least one substance. Opioid HR 2.19. Opioid+cannabis interaction HR 1.42. Opioid+alcohol interaction HR 1.15.
How They Did This
Prospective cohort from the Boston Birth Cohort (1998-2019) with 3,138 children followed from age 6 months to 21 years. Prenatal substance exposure assessed by self-report and ICD codes. ADHD diagnosed from electronic medical records. Cox proportional hazards and elastic net regression models.
Why This Research Matters
Polysubstance use during pregnancy is increasing. Understanding how multiple substances interact to affect ADHD risk can improve prenatal counseling and cessation programs.
The Bigger Picture
The finding that substance interactions increase ADHD risk beyond individual exposures underscores the importance of addressing polysubstance use, not just individual substances, in prenatal care.
What This Study Doesn't Tell Us
Self-reported substance use likely underestimates exposure. Urban, low-income cohort may not generalize. Cannot fully separate prenatal exposure effects from postnatal environmental factors.
Questions This Raises
- ?Does cannabis exposure alone (without opioids) significantly increase ADHD risk?
- ?Could early intervention for children exposed to multiple substances reduce ADHD symptoms?
Trust & Context
- Key Stat:
- Opioid+cannabis interaction: 1.42x higher ADHD risk
- Evidence Grade:
- Large prospective birth cohort with long follow-up, though self-reported exposure and urban sample limit generalizability.
- Study Age:
- Published in 2022 with data from 1998-2019.
- Original Title:
- Individual and Combined Association Between Prenatal Polysubstance Exposure and Childhood Risk of Attention-Deficit/Hyperactivity Disorder.
- Published In:
- JAMA network open, 5(3), e221957 (2022)
- Authors:
- Garrison-Desany, Henri M(3), Hong, Xiumei, Maher, Brion S(5), Beaty, Terri H, Wang, Guoying, Pearson, Colleen, Liang, Liming, Wang, Xiaobin, Ladd-Acosta, Christine
- Database ID:
- RTHC-03861
Evidence Hierarchy
Enrolls participants and follows them forward in time.
What do these levels mean? →Frequently Asked Questions
Which substance had the strongest link to ADHD?
Prenatal opioid exposure had the highest individual risk (HR 2.19), but the combination of opioids with cannabis or alcohol increased risk further, highlighting the importance of considering polysubstance exposure.
How common was prenatal substance use?
Nearly one in four mothers (24.2%) reported using at least one substance during pregnancy, with tobacco being the most common (18.5%).
Read More on RethinkTHC
Cite This Study
https://rethinkthc.com/research/RTHC-03861APA
Garrison-Desany, Henri M; Hong, Xiumei; Maher, Brion S; Beaty, Terri H; Wang, Guoying; Pearson, Colleen; Liang, Liming; Wang, Xiaobin; Ladd-Acosta, Christine. (2022). Individual and Combined Association Between Prenatal Polysubstance Exposure and Childhood Risk of Attention-Deficit/Hyperactivity Disorder.. JAMA network open, 5(3), e221957. https://doi.org/10.1001/jamanetworkopen.2022.1957
MLA
Garrison-Desany, Henri M, et al. "Individual and Combined Association Between Prenatal Polysubstance Exposure and Childhood Risk of Attention-Deficit/Hyperactivity Disorder.." JAMA network open, 2022. https://doi.org/10.1001/jamanetworkopen.2022.1957
RethinkTHC
RethinkTHC Research Database. "Individual and Combined Association Between Prenatal Polysub..." RTHC-03861. Retrieved from https://rethinkthc.com/research/garrison-desany-2022-individual-and-combined-association
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.