Research

The case for heat as infrastructure.

Regular sauna bathing is one of the most robust, lowest-cost preventive interventions in the cardiovascular and cognitive-health literature. London already has the sites. It needs the policy.

Clinical Case

Health outcomes

Comparing 4–7 sauna sessions per week to 1 session per week, in Finnish cohort studies with 20+ year follow-up.

63%

lower risk of sudden cardiac death

Comparing 4–7 sauna sessions per week to 1 session per week, Finnish cohort studies.

50%

lower risk of fatal cardiovascular disease

Kunutsor & Laukkanen, Mayo Clinic Proceedings (2018).

40%

lower risk of all-cause mortality

Laukkanen et al., JAMA Internal Medicine (2015).

66%

lower risk of dementia

Laukkanen dementia cohort studies, reviewed by the Alzheimer's Drug Discovery Foundation.

Built From What's There

London's bathhouses are overwhelmingly adaptive reuse.

Based on 68 classified sites across London. Adaptive reuse and meanwhile-use of underused urban fabric — yards, arches, retail units — dominate over new-build.

Research desk with health data charts and sauna architectural plans
1Gardens & yards
17
2Retail & fitness-studio reuse
16
3Floating, waterside & rooftop
13
4Other / mixed typologies
10
5Railway arches
6
6Reused buildings
6

Social Prescribing

Why sauna fits the referral pathway.

Social prescribing already connects patients to community activities alongside clinical care. Sauna offers routine, consistency, low-pressure connection, and a regulated pause — all without requiring skill or prior experience.

Routine & consistency

Predictable sessions rebuild a routine.

Low-pressure connection

Social contact without performance demands.

No skill required

Fully accessible, no prior experience needed.

A regulated pause

Heat and stillness interrupt daily stress.

Clear structure

A defined beginning and end, every session.

Community anchor

A third place that holds neighbourhoods together.