In a crossover RCT of 66 hypertensive patients, CBD raised anandamide levels but this did not correlate with blood pressure reduction, suggesting other mechanisms.
Cardiovascular and endocannabinoid researchers.
AEA rose 11.1 ng/mL but did not predict BP change
What the researchers 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.
Why it matters
Dissociates CBD's endocannabinoid effects from its cardiovascular effects, redirecting mechanistic research.
The numbers in context
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 the study worked
Sub-analysis of HYPER-H21-4 crossover RCT. 66 hypertensive patients. CBD vs. placebo for 5 weeks each. AEA and 2-AG measured.
What this study cannot tell us
Plasma may not reflect tissue changes. 5-week period. Only two endocannabinoids measured.
How to read the evidence
Well-designed crossover RCT. Plasma measurements may not capture full picture.
When this study was published
2025 sub-analysis of the landmark HYPER-H21-4 CBD-hypertension trial.
The bigger picture
CBD affects the endocannabinoid system and lowers blood pressure, but these may be independent effects.
Questions still open
- What mechanism drives CBD blood pressure effects?
- Do tissue endocannabinoid changes correlate with BP?
Common questions
Does CBD lower blood pressure via endocannabinoids?
Does CBD affect endocannabinoid levels?
Read the original research
Can Endocannabinoids Explain CBD-Mediated Reduction in Blood Pressure? Insights from a Randomized, Placebo-Controlled, Crossover Trial.
Cannabis and cannabinoid research
Citation
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
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