Infrared Sauna Blanket Use Affected Body Functions
Researchers tracked heart rate, blood pressure, and sweat loss in participants testing infrared sauna blankets.
Updated on Sept. 22, 2026 in Sleep Disorders
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A 2026 pilot study at St. Mary's University examined the physiological response to infrared sauna blankets. During a 60-minute session at 75 degrees Celsius, participants experienced significant shifts in vital signs and biomarkers.
Why it matters
Understanding how these devices impact the body is essential, as researchers aim to determine how portable heat therapy compares to traditional Finnish sauna modalities. This information helps individuals consider safety before integrating high-heat devices into their personal routines.
In a St. Mary's University trial of eight participants, a 60-minute session at 75 degrees Celsius caused sublingual body temperature to rise from 36.8 to 38.2 degrees Celsius. Preliminary results also noted a rise in serum interleukin-6 from 0.91 to 1.70 pg/ml.
The players
St. Mary's University
An academic institution that conducted the physiological HEAT trial investigating the effects of infrared sauna blankets.
The details
The study tracked physiological changes by monitoring vitals and blood markers, including a significant average sweat loss of 1.3 liters per session. By comparing these outcomes against control trials where the heat was inactive, researchers sought to isolate the systemic impact of the infrared heat. These devices aim to replicate the heating intensity of traditional Finnish saunas, triggering rapid cardiovascular and thermoregulatory responses in the body.
Timeline
A 2024 study of 24 participants examined sleep quality over 14 days.
The pilot study results were published in September 2026.
Health Landscape
This research contributes to a broader scientific inquiry into how various heat-therapy modalities influence human physiology and sleep architecture. It sits within a growing body of evidence attempting to distinguish the clinical outcomes of portable infrared devices from traditional sauna practices.
Because these blankets induce significant changes in heart rate and body temperature, those with underlying cardiovascular conditions should approach them with caution. It is worth discussing the use of high-heat devices with your doctor to ensure they are safe for your specific health needs.
The takeaway
Infrared sauna blankets can rapidly increase heart rate and body temperature, placing a temporary stressor on the cardiovascular system. If you choose to use heat-based wellness tools, track how you feel afterward and consult your physician to determine if such intensity is appropriate for you.
Further reading
For more on the intersection of thermal regulation and rest, explore our section on Sleep Disorders.
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