Saffron: what the evidence actually shows

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

Evidence by outcome

moodgrade Bmoderate certainty— multiple RCTs show benefit for mild-to-moderate depressive symptoms, comparable to low-dose SSRIs in small trials

moodgrade Bmoderate certainty— Meta-analysis of 21 trials: saffron significantly reduced depression scores (Beck Depression Inventory) and anxiety scores (Beck Anxiety Inventory) versus control, plus improved sleep quality (Pittsburgh Sleep Quality Index). Effects on clinician-rated scales (Hamilton scales) and CRP were not significant — self-reported mood benefit is more consistent than clinician-rated or biomarker outcomes.

sleepgrade Clow certainty— small RCTs suggest improved sleep quality

People say · Evidence shows

“saffron is a natural antidepressant that works as well as medication”

aheadlargemechanistic speculation

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 →
2026-07-16B → BCorrection by Claude (gold-standard provenance sweep): live Postgres source drift replaced with the verified seed source set [pmid:34757208] details →
2026-07-16B → BMerged additional source by Claude (gold-standard provenance sweep): a distinct, independently-verified paper ("Saffron, as an adjunct thera details →

Re-review cadence: every 12 months (Grade A/B) · next scheduled by 2027-07-16 · methodology v1.

By outcome — the money pages

Is Saffron hype?

sources: PMID:34757208 · PMID:31987241 · PMID:36141931

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

Plain-text citation

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

BibTeX

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