Health Research DatabaseClaim-to-evidence tracking
HRD Claim Ledger · Living evidence brief

Do saunas lower blood pressure?

Supported in some settings

Human studies suggest that sauna and other passive-heat protocols can reduce blood pressure in some populations, especially over short follow-up periods. The result is not universal, and effects vary by heat modality, dose, health status and study design. This is not evidence that sauna replaces prescribed hypertension care.

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01
Evidence profile

What the evidence can—and cannot—support

Human evidenceSubstantial
Randomized evidenceModerate
ConsistencyMostly consistent
ReplicationMultiple groups
DirectnessModerate
Long-term outcomesLimited
Important uncertainty

Few large, long-duration randomized trials measure clinical cardiovascular outcomes.

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Research Receipt

An auditable count, not “studies show”

Claim checkedRegular sauna use lowers blood pressure.
Dataset edition2026-09-18
15matched publications
4randomized trials
1reviews / meta-analyses
6registered trials
2active trials
Reproduce this receipt

Included: Records in the Sauna and passive heat topic whose high-signal metadata contains at least one outcome term below.

Outcome expression: "blood pressure" OR "hypertension" OR "hypertensive"

Excluded: Records outside the intervention topic, animal-only records rejected by the source query, and records without an outcome-term match. This is a reproducible index, not a systematic review.

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Matched publications

Why these records count

Each record matched the intervention topic and at least one claim-specific outcome term. Open a record for source metadata and inclusion provenance.

Trial Radar

Evidence that may change the answer

Registration is not a result. Status and dates come from ClinicalTrials.gov.

Cite this page

Make the evidence trail portable.

Health Research Database. “Do saunas lower blood pressure?” HRD Claim Ledger. Dataset 2026-09-18. Accessed 2026-09-18.

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