AI Insight
A Finnish study found that a single 30-minute sauna session causes a temporary increase in white blood cells circulating in the bloodstream. This immune response is similar to what occurs during physical exercise and may contribute to the documented health benefits associated with regular sauna use. The findings suggest that heat exposure from sauna bathing can activate the body's immune surveillance system.
Why it matters
This research provides a potential biological mechanism explaining why sauna bathing has been linked to various health benefits in epidemiological studies. Understanding how heat exposure affects immune function could lead to new approaches for supporting immune health, particularly for individuals who cannot engage in traditional exercise.
Understand the Science
A new Finnish study reveals that just 30 minutes in a sauna can temporarily flood the bloodstream with additional white blood cells, potentially helping the immune system patrol the body and detect threats. The surprising response resembles the immune boost seen during exercise and may help explain some of the health benefits linked to sauna bathing.
Source: A single sauna session sends immune cells surging through your body