CBD Raises Anandamide Levels But This Does Not Explain Its Blood Pressure-Lowering Effect
In a crossover RCT of 66 hypertensive patients, CBD raised anandamide levels but this did not correlate with blood pressure reduction, suggesting other mechanisms.
Quick Facts
What This Study Found
CBD (225-450 mg/day, 5 weeks) increased AEA by 11.1 ng/mL (p=0.025). AEA change did not correlate with systolic BP change (r=-0.106, p=0.428). BMI, antihypertensives, and glucose predicted AEA increase; BP reduction did not. No 2-AG effect.
Key Numbers
66 patients; AEA +11.1 ng/mL (p=0.025); BP correlation r=-0.106 (p=0.428); no 2-AG effect (p=0.478).
How They Did This
Sub-analysis of HYPER-H21-4 crossover RCT. 66 hypertensive patients. CBD vs. placebo for 5 weeks each. AEA and 2-AG measured.
Why This Research Matters
Dissociates CBD's endocannabinoid effects from its cardiovascular effects, redirecting mechanistic research.
The Bigger Picture
CBD affects the endocannabinoid system and lowers blood pressure, but these may be independent effects.
What This Study Doesn't Tell Us
Plasma may not reflect tissue changes. 5-week period. Only two endocannabinoids measured.
Questions This Raises
- ?What mechanism drives CBD blood pressure effects?
- ?Do tissue endocannabinoid changes correlate with BP?
Trust & Context
- Key Stat:
- AEA rose 11.1 ng/mL but did not predict BP change
- Evidence Grade:
- Well-designed crossover RCT. Plasma measurements may not capture full picture.
- Study Age:
- 2025 sub-analysis of the landmark HYPER-H21-4 CBD-hypertension trial.
- Original Title:
- Can Endocannabinoids Explain CBD-Mediated Reduction in Blood Pressure? Insights from a Randomized, Placebo-Controlled, Crossover Trial.
- Published In:
- Cannabis and cannabinoid research (2025)
- Authors:
- Kumric, Marko(2), Dujic, Goran(2), Vrdoljak, Josip(2), Supe Domic, Daniela, Dujic, Zeljko, Bozic, Josko
- Database ID:
- RTHC-06874
Evidence Hierarchy
Participants are randomly assigned to treatment or placebo groups to test cause and effect.
What do these levels mean? →Frequently Asked Questions
Does CBD lower blood pressure via endocannabinoids?
CBD raised anandamide but this did not correlate with BP reduction, suggesting a different mechanism.
Does CBD affect endocannabinoid levels?
Yes, it raised anandamide but not 2-AG.
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Cite This Study
https://rethinkthc.com/research/RTHC-06874APA
Kumric, Marko; Dujic, Goran; Vrdoljak, Josip; Supe Domic, Daniela; Dujic, Zeljko; Bozic, Josko. (2025). Can Endocannabinoids Explain CBD-Mediated Reduction in Blood Pressure? Insights from a Randomized, Placebo-Controlled, Crossover Trial.. Cannabis and cannabinoid research. https://doi.org/10.1177/25785125251392773
MLA
Kumric, Marko, et al. "Can Endocannabinoids Explain CBD-Mediated Reduction in Blood Pressure? Insights from a Randomized, Placebo-Controlled, Crossover Trial.." Cannabis and cannabinoid research, 2025. https://doi.org/10.1177/25785125251392773
RethinkTHC
RethinkTHC Research Database. "Can Endocannabinoids Explain CBD-Mediated Reduction in Blood..." RTHC-06874. Retrieved from https://rethinkthc.com/research/kumric-2025-can-endocannabinoids-explain-cbdmediated
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.