College students with ADHD who drank alcohol reported worse sleep and more alcohol-related consequences than peers without ADHD, but ADHD did not worsen cannabis-related consequences.
College health professionals, ADHD clinicians, and researchers studying substance use risk factors in young adults.
ADHD predicted alcohol consequences but not cannabis consequences in college students
What the researchers found
Among college drinkers, those with ADHD (n=51) reported significantly worse sleep quality and more alcohol-related negative consequences than those without ADHD (n=50). ADHD independently predicted alcohol consequences but not cannabis consequences.
Why it matters
College students with ADHD are at elevated risk for substance problems. Understanding that their vulnerability appears specific to alcohol, not cannabis, could help target prevention efforts.
The numbers in context
51 students with ADHD, 50 without. 52 used cannabis. ADHD independently predicted alcohol consequences but not cannabis consequences.
How the study worked
Cross-sectional study of 101 college students who drink alcohol, with and without ADHD diagnoses confirmed by structured interview. Sleep quality, substance use, and consequences measured by validated questionnaires.
What this study cannot tell us
Small sample size limits statistical power. Cross-sectional design prevents causal conclusions. Self-selected college sample may not generalize.
How to read the evidence
Small cross-sectional sample with diagnostic confirmation but limited statistical power for subgroup analyses.
When this study was published
Published in 2024.
The bigger picture
The finding that ADHD selectively increases alcohol but not cannabis consequences suggests different mechanisms may underlie substance-related problems for each drug.
Questions still open
- Why does ADHD selectively increase alcohol-related but not cannabis-related consequences?
- Would longitudinal data reveal whether poor sleep mediates the ADHD-alcohol consequence relationship?
Common questions
Do college students with ADHD have more substance problems?
Does poor sleep make substance use worse for students with ADHD?
Read the original research
Sleep, Alcohol and Cannabis Use in College Students With and Without Attention-Deficit/Hyperactivity Disorder.
Substance use & misuse, 59(8), 1141-1149
Citation
Marsh, Nicholas P; Oddo, Lauren E; Murphy, James G; Chronis-Tuscano, Andrea. (2024). Sleep, Alcohol and Cannabis Use in College Students With and Without Attention-Deficit/Hyperactivity Disorder.. Substance use & misuse, 59(8), 1141-1149. https://doi.org/10.1080/10826084.2024.2320376
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