Patient surveys and chemical analysis identified specific cannabis terpenes linked to anxiety relief
A survey of medical cannabis patients combined with chemical analysis found that THC and the terpene trans-nerolidol correlated with anxiety relief, while several other terpenes (guaiol, eucalyptol, and others) correlated with reduced effectiveness.
Quick Facts
What This Study Found
Medical cannabis patients receiving organically grown cannabis from a single source rated cannabis as highly effective for anxiety (average 8.03 out of 10 on a Likert scale).
Patients identified which strains they found most and least effective for anxiety. The top four and bottom four strains were then chemically analyzed by HPLC-MS/MS (for cannabinoids) and GC-MS (for terpenes).
THC and trans-nerolidol showed statistically significant correlations with increased anxiety relief.
Six terpenes correlated with decreased anxiety relief: guaiol, eucalyptol, γ-terpinene, α-phellandrene, 3-carene, and sabinene hydrate.
The findings support the "entourage effect" hypothesis, suggesting that the therapeutic profile of cannabis for anxiety depends on the specific combination of cannabinoids and terpenes, not just THC or CBD levels alone.
Key Numbers
Average anxiety relief rating: 8.03/10. THC and trans-nerolidol positively correlated with anxiolytic activity (statistically significant). Six terpenes negatively correlated: guaiol, eucalyptol, γ-terpinene, α-phellandrene, 3-carene, sabinene hydrate.
How They Did This
Patient survey combined with chemical analysis. Medical cannabis patients rated strain effectiveness for anxiety. Top and bottom strains analyzed by HPLC-MS/MS (cannabinoids) and GC-MS (terpenes). Statistical correlations between chemical profiles and patient-reported effectiveness.
Why This Research Matters
Most cannabis-for-anxiety research focuses on THC and CBD. This study takes a systems approach, analyzing terpene profiles alongside cannabinoids to identify which chemical signatures are associated with anxiety relief. This could eventually help guide strain selection for patients.
The Bigger Picture
This represents early steps toward understanding why different cannabis strains produce different therapeutic effects. If specific terpene-cannabinoid combinations can be reliably linked to anxiety relief, this could move medical cannabis beyond the "indica vs. sativa" framework toward chemotype-based prescribing.
What This Study Doesn't Tell Us
Small number of strains analyzed (top 4 and bottom 4). Patient self-report is subjective and susceptible to expectation effects. Single-source cannabis limits generalizability. Correlational design cannot establish which compounds are causing the effects.
Questions This Raises
- ?Does trans-nerolidol directly contribute to anxiety relief or is it a marker for another active compound?
- ?Would controlled trials with specific terpene-cannabinoid combinations confirm these correlations?
- ?How consistent are terpene profiles across different grows of the same strain?
Trust & Context
- Key Stat:
- Patients rated cannabis 8.03/10 for anxiety relief; THC and trans-nerolidol linked to effectiveness
- Evidence Grade:
- Preliminary. Novel approach combining patient reports with chemical analysis, but small sample of strains and correlational design limit strength.
- Study Age:
- Published in 2018. Research on cannabis terpenes and the entourage effect has expanded since, though controlled trials remain rare.
- Original Title:
- Cannabis and the Anxiety of Fragmentation-A Systems Approach for Finding an Anxiolytic Cannabis Chemotype.
- Published In:
- Frontiers in neuroscience, 12, 730 (2018)
- Authors:
- Kamal, Brishna S, Kamal, Fatima, Lantela, Daniel E
- Database ID:
- RTHC-01710
Evidence Hierarchy
A snapshot of a population at one point in time.
What do these levels mean? →Frequently Asked Questions
What is trans-nerolidol?
Trans-nerolidol is a terpene (aromatic compound) found in many plants including cannabis, jasmine, and tea tree. It has a woody, floral scent. In this study, strains higher in trans-nerolidol were rated more effective for anxiety by patients.
What is the entourage effect?
The entourage effect is the hypothesis that cannabis compounds work together synergistically, meaning the therapeutic effects of whole-plant cannabis differ from isolated THC or CBD alone. Terpenes, minor cannabinoids, and flavonoids may all contribute to the overall effect profile.
Read More on RethinkTHC
- anxiety-leaving-house-weed-withdrawal-agoraphobia
- anxiety-response-technique-weed-withdrawal
- anxiety-toolkit-weed-withdrawal
- anxiety-worse-after-quitting-weed
- breathing-exercises-weed-withdrawal-anxiety
- cannabis-induced-anxiety
- does-weed-help-anxiety
- grounding-techniques-weed-withdrawal
- health-anxiety-weed-withdrawal
- manage-anxiety-without-weed
- quitting-weed-anxiety-disorder
- quitting-weed-anxiety-medication-ssri
- self-medicating-anxiety-with-weed
- therapy-quitting-weed-anxiety
- weed-and-anxiety
- weed-biphasic-effect-anxiety
- weed-generalized-anxiety-disorder
- weed-panic-attacks
- weed-paranoia
- weed-social-anxiety
- weed-tolerance-anxiety-stopped-working
- weed-withdrawal-anxiety
- weed-withdrawal-panic-attacks-night
- weed-withdrawal-work-anxiety
- withdrawal-anxiety-vs-real-anxiety
Cite This Study
https://rethinkthc.com/research/RTHC-01710APA
Kamal, Brishna S; Kamal, Fatima; Lantela, Daniel E. (2018). Cannabis and the Anxiety of Fragmentation-A Systems Approach for Finding an Anxiolytic Cannabis Chemotype.. Frontiers in neuroscience, 12, 730. https://doi.org/10.3389/fnins.2018.00730
MLA
Kamal, Brishna S, et al. "Cannabis and the Anxiety of Fragmentation-A Systems Approach for Finding an Anxiolytic Cannabis Chemotype.." Frontiers in neuroscience, 2018. https://doi.org/10.3389/fnins.2018.00730
RethinkTHC
RethinkTHC Research Database. "Cannabis and the Anxiety of Fragmentation-A Systems Approach..." RTHC-01710. Retrieved from https://rethinkthc.com/research/kamal-2018-cannabis-and-the-anxiety
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.