Turmeric: what the evidence actually shows

surging turmeric — attention well ahead of the human evidence

Reviewed by Substrate editorial, Independent research collective · 2026-07-16

⚠ Safety in context

moderatewith Warfarin: High-dose curcumin may have mild antiplatelet effects; caution with warfarin.

Evidence by outcome

inflammationgrade Clow certainty— small anti-inflammatory signal; bioavailability is a major limitation

joint healthgrade Clow certainty— modest, short-term pain relief in osteoarthritis in small studies

moodgrade Clow certainty— curcumin may reduce depressive symptoms as an adjunct; bioavailability-limited

cognitiongrade Clow certainty— Systematic review: curcumin may modestly benefit some cognitive domains in older adults, but effects are inconsistent across domains and trials are small, with bioavailability a recurring limitation.

skingrade Clow certainty— Systematic review of clinical studies of turmeric/curcumin (oral and topical) across skin conditions (acne, atopic dermatitis, psoriasis, photoaging, pruritus and others): several studies reported significant improvement in disease severity versus control, but the authors characterize this as early evidence from a limited set of studies needing further confirmation.

People say · Evidence shows

“Turmeric cures inflammation”

aheadlargemarketing claim

Grade history

2026-07-16C → CSource correction by Claude (b2 garbage-source correction): replaced an off-topic search-fallback source (published before the pump's topica details →
2026-07-16C → CMerged additional source by Claude (gold-standard provenance sweep): a distinct, independently-verified paper ("The efficacy and safety of C details →
2026-07-16C → CCorrection by Claude (gold-standard provenance sweep): live Postgres source drift replaced with the verified seed source set [pmid-27533649] details →
2026-07-16C → CCorrection by Claude (gold-standard provenance sweep): live Postgres source drift replaced with the verified seed source set [pmid-36804260] details →

Re-review cadence: every 6 months (Grade C+) · next scheduled by 2027-01-16 · methodology v1.

By outcome — the money pages

Compare

sources: PMID:36804260 · PMID:27533649 · PMID:34017975 · PMID:28236605 · PMID:40579315 · PMID:27213821

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Reuse under CC-BY 4.0 with attribution to evidencebased.info.

Plain-text citation

Substrate. Turmeric: what the evidence actually shows. https://evidencebased.info/interventions/turmeric. Updated 2026-07-16.

BibTeX

@misc{substrate_nterventionsturmeric,
  author = {Substrate editorial},
  title  = {Turmeric: what the evidence actually shows},
  year   = {2026},
  url    = {https://evidencebased.info/interventions/turmeric},
  note   = {evidencebased.info}
}