Curcumin showed no clear overall cognitive benefit in human studies
Human trials comparing curcumin with placebo found no significant improvement in overall cognition. Some specific thinking skills improved, while adverse events were more frequent with curcumin.
Based on the published abstract. The full paper may contain additional methods, results and limitations.
The 30-second takeaway
The human evidence did not show a statistically significant improvement in overall cognition with curcumin compared with placebo. Subgroup analyses suggested improvements in working memory and processing speed, but these narrower findings do not establish a general cognitive benefit. Adverse events were more common with curcumin, adding uncertainty about its overall usefulness.
The abstract omits human participants' ages, trial lengths, and adverse-event types or rates. It also does not identify which trials contributed to the cognitive subgroup findings.
What researchers found
Human cognitive outcomes
Curcumin versus placebo across human studies; assessment times were not reported. The pooled result was not statistically significant.
Overall scores and specific skills
Working memory means holding information briefly in mind; processing speed concerns how quickly information is handled. Improvements in these specific skills appeared in subgroup analyses, alongside an inconclusive result for overall cognitive outcomes.
Animal results need separate interpretation
Curcumin improved learning and memory measures in rodent models of Alzheimer's disease. Those experiments address an animal model, while the human trials directly address human cognitive outcomes and produced a less consistent pattern.
The original publication
Targeting cognitive aging with curcumin supplementation: A systematic review and meta-analysis.
Yu L, Li N, Li B et al.
J Prev Alzheimers Dis · 2025
- PubMed ID
- 40579315
- Record checked
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