Analysis of 268 online forum threads found that 25% of individual posts claimed cannabis helps ADHD while only 8% said it was harmful, despite zero clinical evidence supporting cannabis for ADHD treatment.
Read this if you have ADHD and have encountered online claims that cannabis can help manage symptoms.
25% of posts said cannabis helps ADHD vs. 8% harmful, with no clinical evidence behind it
What the researchers found
Despite ADHD being a risk factor for problematic cannabis use, there is growing online discourse portraying cannabis as a treatment for ADHD. This study is the first to systematically analyze these discussions.
Researchers identified 268 online forum threads about cannabis and ADHD. A random 20% sample (55 threads, averaging 17.5 posts each) was coded by three raters. Among 401 coded posts:
25% endorsed cannabis as therapeutic for ADHD, while only 8% described it as harmful. 5% said it was both therapeutic and harmful, and 2% said it had no effect. This pro-therapeutic pattern was consistent across years.
Importantly, this positive framing of cannabis for ADHD did not extend to other conditions. Posts about mood disorders, other psychiatric conditions, and general daily life functioning did not show the same therapeutic bias, suggesting the ADHD-specific narrative is distinctive.
Some posts claimed healthcare providers had sanctioned their cannabis use for ADHD, adding perceived legitimacy to the practice.
Why it matters
The internet increasingly shapes healthcare decisions. When patients or parents searching for ADHD information encounter overwhelmingly positive cannabis narratives online, this could influence self-medication decisions. Currently, there are no clinical recommendations or systematic research supporting cannabis for ADHD.
The numbers in context
268 forum threads identified. 55 analyzed (mean 17.5 posts each). 401 posts coded. 25% said cannabis is therapeutic for ADHD. 8% said harmful. 5% said both. 2% said no effect. Cohen's kappa = 0.74 (good inter-rater reliability).
How the study worked
Qualitative analysis of online forum discussions. 268 threads identified. 20% randomly selected (55 threads, 401 qualifying posts). Three raters coded content (Cohen's kappa = 0.74). Posts coded for therapeutic, harmful, both, or no effect endorsements.
What this study cannot tell us
Online forum users are not representative of all people with ADHD. Posts may be influenced by cannabis-positive communities. Cannot verify ADHD diagnosis or actual cannabis effects. Coding captures stated opinions, not outcomes.
How to read the evidence
Systematic qualitative analysis with good inter-rater reliability, but analyzes online discourse rather than clinical outcomes.
When this study was published
Published in 2016. Online discourse about cannabis and ADHD has likely expanded with legalization and social media growth.
The bigger picture
This study reveals a disconnect between online discourse and clinical evidence. While people with ADHD report subjective benefits from cannabis, the objective evidence shows ADHD is a risk factor for cannabis use disorders. Online narratives may normalize self-medication and delay evidence-based treatment.
Questions still open
- Does cannabis actually help ADHD symptoms, or are users misattributing other effects? Could online cannabis-for-ADHD narratives delay people from seeking evidence-based treatment? Would rigorous clinical trials settle this question?
Common questions
Does cannabis help with ADHD?
Why do people with ADHD use cannabis?
Read the original research
"I Use Weed for My ADHD": A Qualitative Analysis of Online Forum Discussions on Cannabis Use and ADHD.
PloS one, 11(5), e0156614
Citation
Mitchell, John T; Sweitzer, Maggie M; Tunno, Angela M; Kollins, Scott H; McClernon, F Joseph. (2016). "I Use Weed for My ADHD": A Qualitative Analysis of Online Forum Discussions on Cannabis Use and ADHD.. PloS one, 11(5), e0156614. https://doi.org/10.1371/journal.pone.0156614
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