Prenatal Cocaine Exposure Leads to More Marijuana Use by Age 21, Through Cognitive Pathways
Children exposed to cocaine before birth had higher rates of regular marijuana use by age 21, with the pathway running through executive function deficits at age 12 and earlier substance use at 15.
Quick Facts
What This Study Found
Among 310 participants tracked from birth, prenatal cocaine exposure predicted poorer executive function at age 12 (beta=0.19), which predicted substance use at 15 (beta=0.21), which strongly predicted regular marijuana use at 21 (beta=0.70). Overall, 50.7% of cocaine-exposed vs 39.4% of unexposed participants used marijuana regularly.
Key Numbers
310 participants (154 cocaine-exposed, 156 controls). Regular marijuana use at 21: 50.7% exposed vs 39.4% unexposed (p=.046). Indirect effect through executive function and early substance use: beta=0.028 (p=.032).
How They Did This
Longitudinal birth cohort study following 310 participants (154 cocaine-exposed, 156 controls) from birth to age 21, using structural equation modeling to test mediation pathways.
Why This Research Matters
This study maps a developmental cascade from prenatal drug exposure through childhood cognitive deficits to adolescent substance use and adult marijuana use, suggesting intervention windows at each stage.
The Bigger Picture
The findings illustrate how prenatal exposures can set off a chain of vulnerability spanning decades. Early cognitive intervention could potentially break the cycle before it reaches adolescent substance use.
What This Study Doesn't Tell Us
Cannot fully separate cocaine exposure effects from associated environmental risks. Executive function measured by caregiver report. Regular marijuana use is the outcome, which some may not consider problematic. Attrition over 21 years.
Questions This Raises
- ?Could early executive function training reduce later substance use risk?
- ?Are there similar pathways from prenatal cannabis exposure?
- ?At what age would intervention be most effective?
Trust & Context
- Key Stat:
- 50.7% of prenatal cocaine-exposed adults used marijuana regularly vs 39.4% of controls
- Evidence Grade:
- Well-powered longitudinal study spanning 21 years with structural equation modeling, though environmental confounding remains a concern.
- Study Age:
- 2025 analysis from a birth cohort study tracking participants from birth through age 21.
- Original Title:
- Cognitive and behavioral pathways from prenatal cocaine exposure to regular marijuana use during emerging adulthood.
- Published In:
- Drug and alcohol dependence, 275, 112796 (2025)
- Authors:
- Minnes, Sonia(2), Min, Meeyoung O(2), Kim, Sun Kyung, Balser, Sarah, Kim, June-Yung, Singer, Lynn T
- Database ID:
- RTHC-07144
Evidence Hierarchy
Follows a group of people over time to track how outcomes develop.
What do these levels mean? →Frequently Asked Questions
Does prenatal cocaine exposure affect substance use later in life?
This study found 50.7% of adults exposed to cocaine before birth used marijuana regularly by age 21, compared to 39.4% of unexposed controls. The pathway went through poorer executive function in childhood and earlier substance use in adolescence.
Can early intervention prevent this pattern?
The study identified executive function deficits at age 12 as a key link in the chain, suggesting that cognitive interventions in childhood could potentially reduce the risk of later substance use in this population.
Read More on RethinkTHC
Cite This Study
https://rethinkthc.com/research/RTHC-07144APA
Minnes, Sonia; Min, Meeyoung O; Kim, Sun Kyung; Balser, Sarah; Kim, June-Yung; Singer, Lynn T. (2025). Cognitive and behavioral pathways from prenatal cocaine exposure to regular marijuana use during emerging adulthood.. Drug and alcohol dependence, 275, 112796. https://doi.org/10.1016/j.drugalcdep.2025.112796
MLA
Minnes, Sonia, et al. "Cognitive and behavioral pathways from prenatal cocaine exposure to regular marijuana use during emerging adulthood.." Drug and alcohol dependence, 2025. https://doi.org/10.1016/j.drugalcdep.2025.112796
RethinkTHC
RethinkTHC Research Database. "Cognitive and behavioral pathways from prenatal cocaine expo..." RTHC-07144. Retrieved from https://rethinkthc.com/research/minnes-2025-cognitive-and-behavioral-pathways
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.