# Sauna use and immune system response research

> Developing situation record from CLSTR: https://clstr.news/situations/sauna-use-and-immune-system-response-research
> Updated: 2026-10-30T08:38:53.000Z. Sources: 5. Developments: 2.

Researchers from the University of Eastern Finland have identified a link between sauna use and immune system activity. A study published in the journal Temperature involving 51 adults suggests that a 30-minute sauna session can trigger a significant, though transient, increase in white blood cells, including neutrophils and lymphocytes, within the bloodstream.

This process is believed to be driven by heat stress, which causes blood vessels to dilate, increases heart rate, and releases adrenaline, thereby mobilizing immune cells to patrol the body for pathogens. The study also noted that a short cold shower taken during the session may contribute to these effects. While these levels increase during heat exposure, they typically return to baseline within 30 minutes of completing the session.

## Timeline

### 2026-10-30: Education and sauna use linked to health benefits in new studies

Studies indicate that longer periods of schooling may reduce dementia risk, while sauna use can temporarily boost white blood cell counts.

2 sources. https://clstr.news/cluster/education-and-sauna-use-linked-to-health-benefits-in-new-studies

### 2026-10-29: University of Eastern Finland study links sauna use to immune response

A Finnish study reveals that a 30-minute sauna session can temporarily boost white blood cell counts, enhancing the body's ability to patrol for pathogens.

3 sources. https://clstr.news/cluster/university-of-eastern-finland-study-links-sauna-use-to-immune-response

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Cite as: Sauna use and immune system response research. CLSTR, https://clstr.news/situations/sauna-use-and-immune-system-response-research