Video·2 min read·May 2026

Understanding Your Body's Response to Temperature: Insights for Wellness

Mechanisms • 3 min read • Based on research by Mojdeh Rafieian, Erlend Hoftun Farbu, Anje Christina Höper, Rasmus Valtonen, Henna Hyrkäs-Palmu, Juha Perkiömäki, Craig Crandall, Jouni J. K. Jaakkola, Tiina Maria Ikäheimo (2025)

Have you ever stepped into a sauna and felt an immediate rush of warmth, followed by a sense of calm? Or perhaps you've experienced the invigorating chill of a cold plunge, leaving you feeling refreshed and alert? These moments of contrast therapy are more than just a sensory experience; they can significantly impact your cardiovascular health, especially if you have conditions like type 2 diabetes.

A recent study examined how individuals with type 2 diabetes respond to heat and cold exposure compared to those without the condition. The findings reveal important insights that can guide therapeutic practices and wellness protocols for those managing diabetes and hypertension.

The Science Behind Temperature Exposure

When we expose our bodies to extreme temperatures—whether hot or cold—our cardiovascular system responds in specific ways. For instance, cold exposure typically causes blood vessels to constrict, leading to increased blood pressure and heart rate. Conversely, heat exposure dilates blood vessels, which can lower blood pressure while increasing heart rate.

However, the recent research found that individuals with type 2 diabetes exhibited blunted cardiovascular responses during these thermal exposures. For example, during cold exposure, their blood pressure increased less significantly than in healthy individuals. Specifically, the increase in central systolic blood pressure was just 14 mmHg compared to 43 mmHg in controls. This suggests a reduced ability to respond effectively to temperature changes, which may have implications for overall health.

Implications for Wellness Protocols

Understanding these findings can empower individuals with type 2 diabetes to tailor their wellness rituals. The study highlights the need for personalized thermal therapy protocols. For example, while engaging in sauna sessions or cold exposure, it may be beneficial to monitor heart rate and blood pressure closely, especially for those with cardiovascular conditions.

Additionally, the research indicates that while heat exposure reduced blood pressure in both groups, the heart rate increase was less pronounced in those with diabetes. This means that while heat therapy can be beneficial, the response may not be as robust as it is in those without diabetes. Therefore, incorporating gradual exposure to temperature extremes, along with mindfulness practices, can help cultivate resilience and enhance the therapeutic benefits of these experiences.

Key Takeaways

Individuals with type 2 diabetes may experience diminished cardiovascular responses to extreme temperatures, highlighting the need for personalized wellness protocols.
Engaging in thermal therapies like sauna or cold exposure can still be beneficial, but monitoring your body's responses is crucial for optimizing health outcomes.

Based on: Blunted cardiovascular responses in individuals with type 2 diabetes and hypertension during cold and heat exposure
Mojdeh Rafieian, Erlend Hoftun Farbu, Anje Christina Höper, Rasmus Valtonen, Henna Hyrkäs-Palmu, Juha Perkiömäki, Craig Crandall, Jouni J. K. Jaakkola, Tiina Maria Ikäheimo (2025). Frontiers in Physiology

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Blunted cardiovascular responses in individuals with type 2 diabetes and

The Core Claim

This paper, published in Frontiers in Physiology in 2025, asks a question that rarely gets asked directly: what actually happens inside the bodies of people with type 2 diabetes when you expose them to cold or heat? Not epidemiological guesswork — actual, controlled measurement. And the answer is both clarifying and sobering. The cardiovascular response is blunted. Significantly blunted. Where healthy controls saw their central systolic blood pressure climb 43 mmHg during cold exposure, the diabetic group managed only 14. Where controls saw skin blood flow surge by over 600 perfusion units in the heat, diabetic participants averaged 210. The body's thermoregulatory machinery is still running — it just can't get to full speed.

What the Research Landscape Tells Us

This finding isn't isolated. For years, researchers studying autonomic neuropathy in type 2 diabetes have documented what's called reduced heart rate variability — the heart's diminished ability to speed up and slow down in response to demand. What's new here is that we now have whole-body thermal exposure data, not just resting measurements. The cold exposure results are particularly striking because, to the authors' knowledge, no controlled study had previously examined whole-body cold response in this population. We knew from epidemiological data that people with T2D face higher mortality during extreme weather events. Now we have a mechanistic window into why: the cardiovascular system simply doesn't modulate as aggressively when the thermal signal arrives.

The body that can't respond fully to thermal stress isn't just missing a sensation. It's missing an adaptation signal — and adaptation is where the therapy lives.

Where the Science Gets Nuanced

Here's what's interesting: heat exposure reduced blood pressure similarly in both groups. That piece of the thermoregulatory response appears intact. What differed was how the heart rate compensated — a 7 bpm increase in the diabetic group versus 14 in controls — and how much the skin vasodilated to offload heat. So it's not a global shutdown. It's a selective blunting, likely driven by endothelial dysfunction impairing peripheral vasodilation and autonomic neuropathy dampening the baroreflex arc. The machinery is still there. It's just working with worn components.

The Practical Recommendation

If you're managing type 2 diabetes and you're drawn to thermal therapy — sauna, cold plunge, contrast protocols — this research isn't a red light. It's a yellow one. The physiological signals that make these practices therapeutic are still present, just attenuated. That means slower, more gradual exposure, more careful monitoring, and a longer on-ramp. Don't compare your session intensity to someone without metabolic dysfunction. Your body is navigating the same terrain with different equipment. Honor that.

The Surprising Insight

Here's what stops me: the very blunting this paper documents — the reduced cardiovascular response — may also blunt the hormetic adaptation that makes thermal therapy beneficial in the first place. The stress signal that drives heat shock protein production, that triggers vascular remodeling, that trains baroreflex sensitivity — all of it depends on the body mounting a robust response. A dampened response may mean dampened adaptation. Which raises a question the paper doesn't answer but future research must: does regular, carefully dosed thermal therapy in diabetic populations gradually restore some of that responsiveness? Or does the dysfunction run too deep? Given what we know about exercise training improving heart rate variability in T2D, I wouldn't bet against it. But we need the studies. This paper has quietly identified one of the most important unknowns in contrast therapy research.

Blunted cardiovascular responses in individuals with type 2 diabetes and hypertension during cold and heat exposure

Understanding Your Body's Response to Temperature: Insights for Wellness

The Science Behind Temperature Exposure

Implications for Wellness Protocols

Key Takeaways

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