10 Benefits of Infrared Sauna

Infrared saunas are one of our favourite wellness tools and once you understand what’s actually happening inside your body, it’s hard not to be obsessed.

Unlike traditional steam saunas that heat the air around you, infrared saunas use heat waves to warm your body from the inside out. This creates far deeper effects than a regular sweat session.

Here are 10 reasons to make infrared sauna a regular part of your routine…

1. Deep Detoxification

Infrared heat penetrates past the skin’s surface and into your cells, liberating toxins and heavy metals stored in fat cells.
In a traditional sauna, only 1% of your sweat is toxins. In an infrared sauna, that rises to 10%. That’s a big difference.
Using the sauna regularly facilitates the excretion of heavy metals like cadmium, lead, and aluminium through sweat.

2. Cardiovascular Health

As your core temperature rises, your heart works harder to cool you down, mimicking the effect of moderate aerobic exercise on your cardiovascular system. 

In the heat, your heart rate and blood circulation increase and your blood vessels dilate, similarly to the way aerobic exercise does but without the physical strain on joints and muscles.

A large clinical study found that using a sauna 2-3 times per week lowered the risk of fatal cardiac events by 23%, and 48% for those using it 4-7 times per week. 

3. Reduced Inflammation

Heat therapy is one of the most effective natural ways to ease inflammation in the body.

Heat stress from sauna reduces inflammation and increases vasodilation (the widening of blood vessels) which lowers blood pressure and improves blood flow.
It also promotes adaptations in the heart muscle, increasing its efficiency and allowing for better oxygen delivery to other tissues.

4. Improved Circulation

Infrared heat causes your blood vessels to dilate, increasing blood flow and nitric oxide (a molecule fundamental to cardiovascular protection). This benefits cognitive health, recovery, and longevity.

5. Cell Repair and the Longevity Switch

This is where it gets really interesting. Heat stress triggers your body to produce Heat Shock Proteins (HSPs) which is a cell repair crew.

Dr. Rhonda Patrick, PhD in biomedical science, describes HSPs as playing “a crucial role in staving off Alzheimer’s, heart disease, and muscle atrophy” and links them directly to human longevity.
A single 30-minute sauna session can increase heat shock protein levels approximately 50% above baseline and with regular use, this response becomes faster and more resilient.

Sauna has also been shown to activate the FOXO3 gene (your body’s longevity switch). Humans with increased FOXO3 expression have a significantly higher chance of living to 100 years. Mice engineered to produce more FOXO3 experience a 30% increase in lifespan. Heat exposure turns this gene on.

6. Brain Health and Mental Clarity

Regular sauna use increases circulating norepinephrine by up to 310%  a neurotransmitter linked to focus, alertness, and mood stability. It also elevates BDNF (Brain-Derived Neurotrophic Factor), which supports neuroplasticity and memory consolidation.

These changes help protect against age-related cognitive decline and mental health challenges meaning sauna isn’t just good for your body, it’s good for your mind too.

7. Stress Relief and Mindfulness

Sauna is a mindfulness practice.
It forces you to slow down, breathe, and be present. Sauna use supports mental health by increasing the release of endorphins, it regulates the nervous system through relaxation and deep breathing, it boosts mood and aids in pain relief for both acute and chronic pain. 

8. Improved Sleep

The rise and fall of your core body temperature after a sauna session signals to your body that it’s time to rest. Using the sauna during the afternoon or evening helps match your body’s natural cooling with the post-sauna temperature drop, aiding in falling and staying asleep. Many people find they sleep deeper and more soundly on sauna days.

9. Calorie Burn and Growth Hormone Release

At higher temperatures your heart rate increases and your body works hard to regulate its core temperature, burning calories in the process. 

Sauna exposure has been shown to increase growth hormone by up to 16-fold.
For maximum effect, enter fasted or try to avoid food a few hours prior to your session. 

Growth hormone supports muscle growth, fat metabolism, tissue repair, and anti-ageing making this one of the most underrated benefits of regular heat exposure.

10. Longevity

Some of the strongest sauna research comes from Finland, where long-term studies have found that people who use a sauna regularly have lower rates of cardiovascular disease and lower rates of all-cause mortality.

Dr. Andrew Huberman says that regular sauna use enhances the activation of DNA repair and longevity pathways, and increases the activity of heat-dependent molecular mechanisms that help monitor and repair protein structure within our cells. He describes it as one of the highest-leverage health tools available.

How often should you sauna?
Sauna is a practice that you build over time. You might start with one session a week and build to 3, 4 or more.
The more consistently you show up, the more your body transforms at a cellular level.

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