Man Attempts Suicide After Paranoia from Heavy THC and THC-A Use
A case report describes a patient who developed persistent paranoia lasting 28 days and attempted suicide after heavy daily use of THC gummies and THC-A, highlighting risks of unfamiliar cannabinoid products.
Quick Facts
What This Study Found
A patient developed paranoia persisting for 28 days following daily consumption of 15-30 mg THC gummies and THC-A in dried plant form, culminating in a suicide attempt — with the patient reporting unfamiliarity with THC-A dosing and its psychoactive potential when heated.
Key Numbers
15-30 mg/day THC gummies + THC-A dried plant; paranoia persisting 28 days; culminated in suicide attempt
How They Did This
Single case report documenting clinical presentation, substance use history, and course of paranoid symptoms following heavy cannabis use with THC-A products.
Why This Research Matters
THC-A is often marketed as non-psychoactive, but becomes THC when heated — this case illustrates how product labeling confusion can lead to excessive use and severe psychiatric outcomes.
The Bigger Picture
The proliferation of novel cannabinoid products like THC-A, often marketed through legal loopholes as non-psychoactive, creates consumer confusion that can have life-threatening consequences.
What This Study Doesn't Tell Us
Single case report; cannot establish causality; patient may have had predisposing psychiatric vulnerability; exact THC-A dosing unclear; no systematic assessment of psychotic symptoms; publication bias toward dramatic cases.
Questions This Raises
- ?How common is consumer confusion about THC-A?
- ?Should THC-A products carry psychoactive warnings?
- ?What psychiatric screening could identify individuals at risk for cannabis-induced psychosis?
Trust & Context
- Key Stat:
- Evidence Grade:
- Single case report provides an important safety signal but cannot establish prevalence or causality.
- Study Age:
- Published 2026; reflects emerging risks from the growing THC-A product market.
- Original Title:
- Suicide attempt and paranoia persisting for 28 days following heavy delta-9-tetrahydrocannabinolic acid and tetrahydrocannabinol use: A case report.
- Published In:
- PCN reports : psychiatry and clinical neurosciences, 5(1), e70290 (2026)
- Authors:
- Greer, Daniel, Dey, Prithula, Kulig, Caitlin E
- Database ID:
- RTHC-08297
Evidence Hierarchy
Frequently Asked Questions
Can THC-A get you high?
Yes — while THC-A is non-psychoactive in its raw form, it converts to psychoactive THC when heated (smoked, vaped, or cooked). This case report describes a patient who was unaware of this conversion, leading to excessive use and severe psychiatric effects.
Can cannabis cause paranoia and suicidal thoughts?
Heavy cannabis use, particularly with high-potency products, can trigger prolonged paranoia in some individuals. This case documents paranoia lasting 28 days that led to a suicide attempt, though individual psychiatric vulnerability likely plays a role.
Read More on RethinkTHC
- THC-purity-potency-label-meaning
- dab-concentrate-addiction-withdrawal
- delta-8-addiction-withdrawal
- edible-addiction-withdrawal-different
- edibles-psychosis-emergency-room
- healthiest-way-to-consume-cannabis
- how-cannabis-products-made-concentrates-edibles
- laced-weed-fentanyl-contaminated-vape
- legal-weed-vs-street-weed-quality-safety
- quitting-dabs-withdrawal
- quitting-edibles-withdrawal
- sativa-vs-indica-difference-myth
- weed-potency-withdrawal
- greening-out-explained-too-much-thc
- how-to-help-someone-greening-out
- how-to-avoid-greening-out-dosing-prevention
Cite This Study
https://rethinkthc.com/research/RTHC-08297APA
Greer, Daniel; Dey, Prithula; Kulig, Caitlin E. (2026). Suicide attempt and paranoia persisting for 28 days following heavy delta-9-tetrahydrocannabinolic acid and tetrahydrocannabinol use: A case report.. PCN reports : psychiatry and clinical neurosciences, 5(1), e70290. https://doi.org/10.1002/pcn5.70290
MLA
Greer, Daniel, et al. "Suicide attempt and paranoia persisting for 28 days following heavy delta-9-tetrahydrocannabinolic acid and tetrahydrocannabinol use: A case report.." PCN reports : psychiatry and clinical neurosciences, 2026. https://doi.org/10.1002/pcn5.70290
RethinkTHC
RethinkTHC Research Database. "Suicide attempt and paranoia persisting for 28 days followin..." RTHC-08297. Retrieved from https://rethinkthc.com/research/greer-2026-suicide-attempt-and-paranoia
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.