Among 751 cancer patients with chemotherapy-induced neuropathy, higher THC doses produced significantly greater improvement in burning and cold sensations, daily functioning, and quality of life compared to higher CBD doses.
Oncologists, pain specialists, cancer patients experiencing CIPN, and medical cannabis prescribers.
What the researchers found
Both THC-high and CBD-high groups improved, but the THC-high group showed significantly greater improvement in burning sensation (p=0.024), cold sensation (p=0.008), activities of daily living (p=0.029), and quality of life (p=0.006). A significant interaction between THC and CBD was observed, with combined doses yielding greatest relief.
Why it matters
Chemotherapy-induced neuropathy is a common dose-limiting side effect with few effective treatments. This large real-world dataset suggests THC may be more important than CBD for neuropathic pain relief, challenging the common assumption that CBD alone is sufficient for pain management.
The numbers in context
751 patients with CIPN symptoms from 1,493 total. THC-high group: significantly better improvement in burning (p=0.024), cold sensation (p=0.008), ADL (p=0.029), QOL (p=0.006). Significant THC-CBD interaction for symptom improvement.
How the study worked
Patient-reported outcomes from Tikun Olam medical cannabis provider dataset. Of 1,493 patients, 751 with baseline CIPN symptoms were categorized into THC-high/CBD-low and CBD-high/THC-low groups. Symptom changes analyzed at six months using K-means clustering and logistic regression.
What this study cannot tell us
Observational, non-randomized design. Self-reported outcomes without clinical verification. Selection bias possible in who chooses THC-dominant vs CBD-dominant products. No placebo group.
How to read the evidence
Large real-world dataset with meaningful clinical outcomes, but observational design without randomization or blinding limits causal conclusions.
When this study was published
2025 publication.
The bigger picture
The medical cannabis community has increasingly emphasized CBD, partly because it lacks psychoactive effects. This study pushes back, suggesting THC plays a critical role in neuropathic pain that CBD cannot replace, though the combination may be optimal.
Questions still open
- What THC:CBD ratio is optimal for different types of chemotherapy-induced neuropathy?
- Could low-dose THC combined with CBD provide neuropathic relief while minimizing psychoactive effects?
Common questions
What is chemotherapy-induced peripheral neuropathy?
Why did THC work better than CBD for nerve pain?
Read the original research
Comparative Effects of THC and CBD on Chemotherapy-Induced Peripheral Neuropathy: Insights from a Large Real-World Self-Reported Dataset.
Biomedicines, 13(8)
Citation
Geva, Ravit; Bar-Lev, Tali Hana; Lavi Kutchuk, Lee Ahuva; Schaffer, Tali; Mirelman, Dan; Pelles-Avraham, Sharon; Wolf, Ido; Bar-Lev Schleider, Lihi. (2025). Comparative Effects of THC and CBD on Chemotherapy-Induced Peripheral Neuropathy: Insights from a Large Real-World Self-Reported Dataset.. Biomedicines, 13(8). https://doi.org/10.3390/biomedicines13081921
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