Older adults had lower baseline endocannabinoid levels but showed larger increases after cannabis use than younger adults
In 142 adults aged 21-71, older adults had lower baseline endocannabinoid levels but showed larger acute increases after using cannabis, potentially compensating for age-related decline.
Quick Facts
What This Study Found
Older adults (55-71) had lower baseline AEA and DEA vs. younger adults (21-24). After cannabis use, six of seven endocannabinoids increased significantly across all ages. For AEA and DEA, increases were larger in older adults, suggesting cannabis may partially restore age-related endocannabinoid deficits.
Key Numbers
142 adults (38 younger, 73 midlife, 31 older). Cannabis increased AEA, DEA, LEA, PEA, SEA, OEA across all ages (p < .001). 2-AG did not increase. Larger AEA and DEA increases in older adults (significant Time x Age interaction).
How They Did This
Prospective study of 142 adults in three age groups. Endocannabinoid levels measured before and after cannabis use (1 hour post-flower or 2 hours post-edible). Seven endocannabinoids assayed.
Why This Research Matters
Age-related endocannabinoid decline has been linked to chronic pain and neurodegeneration. This study provides the first evidence that cannabis use can acutely boost endocannabinoid levels in older adults, and potentially more than in younger users.
The Bigger Picture
If cannabis can restore declining endocannabinoid tone in older adults, it may explain why many seniors report benefits from cannabis use and opens questions about whether this represents a therapeutic mechanism.
What This Study Doesn't Tell Us
Small older adult group (n=31). Acute effects only. No placebo control. Unclear whether elevated levels translate to clinical benefit.
Questions This Raises
- ?Do the larger increases in older adults translate to greater symptom relief?
- ?Would chronic use maintain elevated levels or would tolerance develop?
Trust & Context
- Key Stat:
- Older adults showed significantly larger AEA and DEA increases after cannabis use
- Evidence Grade:
- Prospective design with biomarker measurement across age groups, but small older adult sample and lack of placebo control limit conclusions.
- Study Age:
- 2026 publication
- Original Title:
- Age differences in endocannabinoid tone are ameliorated after recent cannabis use.
- Published In:
- Scientific reports, 16(1), 3483 (2026)
- Authors:
- Morris, Alan W J(2), Mueller, Raeghan L(4), Sempio, Cristina(20), Klawitter, Jost, Bryan, Angela D, Bidwell, L Cinnamon, Hutchison, Kent E
- Database ID:
- RTHC-08507
Evidence Hierarchy
Enrolls participants and follows them forward in time.
What do these levels mean? →Frequently Asked Questions
Does the endocannabinoid system decline with age?
This study found older adults had lower levels of key endocannabinoids at baseline, consistent with age-related decline.
Does cannabis work differently in older adults?
It may boost endocannabinoid levels more in older adults, potentially because they start from a lower baseline.
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Cite This Study
https://rethinkthc.com/research/RTHC-08507APA
Morris, Alan W J; Mueller, Raeghan L; Sempio, Cristina; Klawitter, Jost; Bryan, Angela D; Bidwell, L Cinnamon; Hutchison, Kent E. (2026). Age differences in endocannabinoid tone are ameliorated after recent cannabis use.. Scientific reports, 16(1), 3483. https://doi.org/10.1038/s41598-025-27618-1
MLA
Morris, Alan W J, et al. "Age differences in endocannabinoid tone are ameliorated after recent cannabis use.." Scientific reports, 2026. https://doi.org/10.1038/s41598-025-27618-1
RethinkTHC
RethinkTHC Research Database. "Age differences in endocannabinoid tone are ameliorated afte..." RTHC-08507. Retrieved from https://rethinkthc.com/research/morris-2026-age-differences-in-endocannabinoid
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.