mild heat exposure enhances immune cell activity in human blood samples
In vitro proliferative response of human peripheral blood lymphocytes to phytohemagglutinin and concanavalin A was markedly enhanced when cultured at 40°C compared with the conventional temperature of 37°C.
What this means for you
Your immune system relies on lymphocytes — white blood cells that respond to threats and keep you resilient. Research shows these cells become significantly more active at slightly elevated temperatures, suggesting that gentle whole-body warmth may support the kind of immune responsiveness most people associate with staying well and bouncing back faster.
The published research
[Environmental Health and Preventive Medicine 10, 171–179, July 2005]
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