Bloated? Gassy? Just feeling off in your tummy? Turns out, your Home Sauna, Garden Sauna, or even a cheeky Outdoor Sauna might be more than just a toasty treat. The short answer: yes, Infrared Sauna therapy may support gut health through stress reduction, better circulation, and inflammation relief. Keep reading to find out why your gut will thank you.

Understanding Infrared Saunas: A Primer
What is an Infrared Sauna and How Does it Work?
An infrared sauna uses light to generate heat, warming your body directly rather than heating the surrounding air.
Unlike traditional saunas, which operate at higher temperatures, infrared heat penetrates more deeply into muscles and tissues.
This makes sessions feel gentler, while still offering strong therapeutic effects.
It also allows users to stay in the sauna longer with greater comfort.
The deeper heat supports detox, circulation, and relaxation benefits.
Traditional Saunas vs. Infrared Saunas (emphasising direct heat penetration)
Traditional saunas warm the air first, then your body.
Infrared saunas do the opposite—using panels that emit infrared light to warm your body directly.
This heat penetrates up to several centimetres into your tissues, offering more profound internal effects.
It’s gentler on the skin and lungs due to lower air temperatures.
That makes it ideal for those with heat sensitivity or respiratory concerns.
The Science of Infrared Wavelengths (Near, Mid, Far Infrared)
Infrared therapy is usually broken down into three types:
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Near-infrared: Acts on the skin’s surface, boosting healing and collagen
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Mid-infrared: Penetrates more deeply to improve circulation and reduce inflammation
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Far-infrared: Reaches the deepest tissues, promoting detox and stress relief
Many saunas now offer full-spectrum panels, delivering all three for comprehensive benefit.
Each wavelength contributes to the overall wellness effects of infrared therapy.
Beyond the Gut: Broader Health Benefits of Infrared Therapy

Deep Detoxification through Sweating (general toxin elimination)
Infrared saunas raise your core body temperature, inducing a deep sweat.
This process helps the body eliminate toxins such as heavy metals, plastics, and chemical residues.
Unlike surface sweating from exercise, this detox may reach deeper cellular waste.
Clearing toxins can support liver function and reduce oxidative stress.
Many people report clearer skin, improved mood, and more energy after consistent use.
Stress Reduction and Mental Well-being (link to gut-brain axis)
Infrared therapy encourages parasympathetic nervous system activity, promoting relaxation.
Lower cortisol levels help ease anxiety and support sleep.
Because the gut and brain are connected via the vagus nerve, this also benefits digestive health.
A calmer mind means fewer gut flare-ups triggered by stress.
This is one reason why infrared therapy is popular for those with IBS or anxiety.
Improved Circulation and Lymphatic Support
Heat from the sauna dilates blood vessels, boosting circulation throughout the body.
This helps oxygen and nutrients reach organs—including the digestive tract.
It also promotes lymphatic flow, which clears cellular waste and reduces swelling.
Improved circulation supports faster healing and less chronic inflammation.
Over time, this can improve general resilience and gut performance.
The Gut Connection: How Infrared Saunas Promote Digestive Health
Direct Impacts on Gut Function and Microbiome
Enhancing Gut Motility and Nutrient Absorption
The gentle heat stimulates peristalsis—the wave-like movement that pushes food through the intestines.
This can reduce bloating, support regular bowel movements, and relieve sluggish digestion.
Better motility also supports nutrient absorption by optimising the timing of food breakdown.
Heat exposure may even support digestive enzyme activity.
Together, this creates a more efficient digestive process.
Supporting a Balanced Gut Microbiome
Studies suggest sauna therapy may encourage a healthier gut microbiome indirectly.
By lowering stress hormones and supporting detox, infrared therapy can reduce conditions that lead to microbiome imbalance.
Chronic stress and toxin build-up often allow harmful bacteria to thrive.
Infrared sauna use may help maintain the balance of beneficial vs. harmful bacteria.
This balance is key for immunity, digestion, and even mental clarity.
Reducing Systemic and Gut Inflammation (addressing conditions like leaky gut)
Regular sauna sessions are known to reduce pro-inflammatory markers in the body.
For those with conditions like leaky gut or Crohn’s, this can provide noticeable relief.
Lowering inflammation helps restore gut lining integrity.
It also calms the immune system, which often overreacts to foods or gut bacteria.
This anti-inflammatory effect may be one of infrared therapy’s biggest gut benefits.
Optimising Your Infrared Sauna Routine for Gut Wellness
Practical Guide to Safe and Effective Use
Recommended Session Duration and Frequency
Start with short sessions: 15–20 minutes at 45–60°C.
Over time, build up to 30–40 minutes, three to four times per week.
Listen to your body and increase gradually.
Using the sauna consistently will produce better long-term gut benefits.
Avoid overdoing it—more is not always better.
Crucial Pre and Post-Sauna Hydration Strategies
Hydration is essential before and after every session.
Drink filtered water or electrolyte-rich fluids to replace lost minerals.
Coconut water, lemon water, or a pinch of sea salt can be helpful.
Dehydration can worsen digestive issues, so don’t skip this step.
Consider herbal teas like ginger or peppermint post-session for added gut support.
Complementary Lifestyle and Dietary Practices for Gut Health
Infrared therapy works best alongside healthy habits.
Eat a diverse, fibre-rich diet including fermented foods like kimchi, kefir, or sauerkraut.
Minimise refined sugar, ultra-processed foods, and alcohol.
Gentle exercise like walking, yoga, or breathwork helps regulate digestion and stress.
Prioritise sleep and set boundaries with screens and social media.
Listening to Your Body's Signals and Customising Your Routine
Each body responds differently to heat therapy.
If you feel dizzy, too fatigued, or uncomfortable, reduce your time or frequency.
Adjust based on energy levels, stress, and digestion.
Over time, you’ll learn what your body needs and when.
Customising your approach improves both safety and results.
Takeaways
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Infrared saunas offer wide-ranging health benefits, including support for gut health
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Improvements may include better motility, microbiome balance, reduced inflammation, and digestive comfort
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The key is pairing sauna use with hydration, diet, and stress management
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Whether indoors or outdoors, consistent sessions can become part of a healthy gut routine
Conclusion
When it comes to digestive wellness, your Infrared Sauna might just be your gut's secret ally. With regular sessions, proper hydration, and a balanced routine, you can support both your belly and your brain. Whether it's a Home Sauna in your bathroom or a Garden Sauna tucked behind your tomatoes, warming up could help you cool down your gut woes.