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

Do saunas increase longevity?

Association, not proof

Frequent sauna bathing has been associated with lower cardiovascular and all-cause mortality in observational research, but that does not prove sauna itself extends life. People who use saunas frequently may differ in health, income, activity and other ways. Randomized trials have not established a longevity benefit.

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01
Evidence profile

What the evidence can—and cannot—support

Human evidenceModerate
Randomized evidenceAbsent for mortality
ConsistencySuggestive
ReplicationLimited
DirectnessLow
Long-term outcomesObservational
Important uncertainty

No randomized trial could practically establish whether sauna use changes lifespan over decades.

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Research Receipt

An auditable count, not “studies show”

Claim checkedFrequent sauna bathing makes people live longer.
Dataset edition2026-09-18
4matched publications
0randomized trials
0reviews / meta-analyses
0registered trials
0active trials
Reproduce this receipt

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

Outcome expression: "mortality" OR "longevity" OR "fatal" OR "death" OR "life expectancy"

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.

No directly matched registered trials are in the current indexed snapshot.
Cite this page

Make the evidence trail portable.

Health Research Database. “Do saunas increase longevity?” HRD Claim Ledger. Dataset 2026-09-18. Accessed 2026-09-18.

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