Is St. John's Wort hype? Attention vs. evidence

settled St. John's Wort is settled: cultural attention is running roughly level with the evidence, which currently grades B for mood.

Reviewed by Substrate editorial, Independent research collective ·

Where St. John's Wort sits

emergingevidence catching upsurgingsettleddecliningdebunked
Current position: settled · attention data as of .

St. John's Wort — established for mild depression; interaction-heavy

What's driving the attention

Grade
B
what does the grade mean?
Certainty
moderate
what does certainty mean?

Grade B / moderate: probably helps, and new studies are unlikely to reverse this — but could shrink the effect size.

What would change our mind

A registered RCT with adequate power in the target population would move the B grade; a null result would confirm the current position; a retraction of a keystone study would trigger an immediate re-review. We watch ClinicalTrials.gov for St. John's Wort registrations and flag readouts within 30 days.

Grade history

No grade changes yet. Initial grade assigned; re-reviewed on quarterly stage assessment — next review by . Methodology v1.

Re-review cadence: quarterly stage assessment · next scheduled by · methodology v1.

Frequently asked

Is St. John's Wort worth the money?

"Worth it" depends on the outcome and grade. See the claims scoreboard: high hype at Grade C means expect less than the marketing implies.

Why is St. John's Wort suddenly everywhere?

The attention drivers block above lists specific dated triggers — podcasts, preprints, viral posts — that pulled attention forward of the evidence.

What would prove St. John's Wort actually works?

See "what would change our mind": registered trials in progress and the results that would move the grade.

Is St. John's Wort a scam?

Not usually — supplements exist and the compounds are real; the scam-adjacent claim is usually the specific benefit, not the substance. The grade tells you which benefit claims are honest.

Related

Cite this page

Citation is encouraged. The proposed reuse license is CC-BY-4.0; status: pending-governance-ratification.

Plain-text citation
Substrate. Is St. John's Wort hype?. https://evidencebased.info/hype/st-johns-wort. Updated 2026-07-14.
BibTeX
@misc{substrate_dinfohypestjohnswort,
  author = {Substrate editorial},
  title  = {Is St. John's Wort hype?},
  year   = {2026},
  url    = {https://evidencebased.info/hype/st-johns-wort},
  note   = {evidencebased.info}
}

Attention momentum: +5% YoY · lag: small