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Infrared Sauna and Heart Health: What the Latest Science Shows

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Cardiovascular disease remains the leading cause of death worldwide, and peripheral arterial disease (PAD) is a major contributor. PAD restricts blood flow to the legs, causing pain, limited mobility, and higher cardiovascular risk. Standard treatment relies heavily on medication and supervised exercise - but many patients cannot tolerate exercise-based regimens.


A 2025 multi-center clinical trial explored whether sauna therapy could improve cardiovascular function in PAD patients. The results were promising: regular sauna sessions enhanced vascular function, improved walking capacity, and reduced symptoms, suggesting that infrared and heat-based therapies may offer a safe, noninvasive complement to existing treatments.


Study Overview


  • Title: Sauna use as a novel management approach for cardiovascular health and peripheral arterial disease

  • Journal: Frontiers in Cardiovascular Medicine (2025)

  • Design: Clinical trial with PAD patients using regular sauna sessions

  • Participants: Adults with confirmed peripheral arterial disease

  • Intervention: Sauna therapy, applied consistently across study duration

  • Outcomes Measured: Endothelial function, walking capacity, cardiovascular symptoms



Key Findings


Improved Vascular Function

  • Sauna sessions improved endothelial function, a key marker of vascular health, through increased blood vessel dilation and nitric oxide availability.


Increased Walking Capacity

  • Patients reported improved pain-free walking distance and endurance, addressing one of the most disabling PAD symptoms.


Symptom Relief

  • Regular heat exposure reduced claudication (leg pain due to restricted blood flow).

  • Patients tolerated the sessions well, with no adverse events reported.


Mechanisms Identified

  • Benefits likely stem from increased vascular shear stress, improved thermoregulation, and activation of protective proteins (e.g., heat shock proteins, eNOS signaling).


Implications for Pain Management and Cardiovascular Care


This study highlights infrared sauna therapy for vascular health as a promising, noninvasive approach for supporting patients with cardiovascular conditions. By improving circulation and endothelial function, sauna sessions may serve as a complementary therapy for vascular disease, especially for individuals who cannot tolerate exercise-based rehabilitation.


For clinicians, the findings reinforce the potential of noninvasive therapy for heart health as part of a broader cardiovascular care strategy. For wellness professionals, integrating infrared sauna for healthy aging and circulation support offers an evidence-based way to expand recovery and prevention services, improve client outcomes, and differentiate wellness programs.


Ultimately, this research supports the growing role of infrared sauna and heart health in both medical and wellness contexts—bridging clinical evidence with practical applications in everyday care.



From Research to Real-World Application: BH Labs


At BH Labs, we empower health and wellness professionals with cutting-edge recovery and performance technologies, including infrared sauna systems designed for clinical-grade outcomes in wellness-friendly environments.


Our turnkey solutions allow clinics, spas, and fitness facilities to integrate infrared sauna therapy alongside modalities like PEMF, red light therapy, and compression-based lymphatic therapy. Together, these science-backed tools expand treatment options, support client health, and drive new business growth.


Learn how BH Labs can help your practice harness the proven benefits of infrared sauna at www.bh-labs.com.

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