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.
Geriatric medicine researchers, endocannabinoid system scientists, older adult cannabis users
Older adults showed significantly larger AEA and DEA increases after cannabis use
What the researchers 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.
Why it 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 numbers in context
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 the study worked
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.
What this study cannot tell us
Small older adult group (n=31). Acute effects only. No placebo control. Unclear whether elevated levels translate to clinical benefit.
How to read the evidence
Prospective design with biomarker measurement across age groups, but small older adult sample and lack of placebo control limit conclusions.
When this study was published
2026 publication
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.
Questions still open
- Do the larger increases in older adults translate to greater symptom relief? Would chronic use maintain elevated levels or would tolerance develop?
Common questions
Does the endocannabinoid system decline with age?
Does cannabis work differently in older adults?
Read the original research
Age differences in endocannabinoid tone are ameliorated after recent cannabis use.
Scientific reports, 16(1), 3483
Citation
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
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