Traditional Sauna vs Infrared Sauna vs Steam Room: Which Is Best for Health & Longevity?

Heat exposure has been used for health and recovery for thousands of years. But today, most people are faced with a choice;

What is best for health and relaxation - a traditional sauna, infrared sauna or steam room?

Each delivers heat in a different way — and each produces distinct physiological effects. Understanding these differences is important to help you choose the option that best supports your health, recovery and long term health goals.

This guide breaks down the science, benefits and best use cases for each.

Traditional saunas are usually the first type that spring to mind when we think of a sauan - small wooden cabins in freezing cold Nordic countries, offering a very dry type of heat.

This is created by heating the air (usually via hot stones) to temperatures of 70–100°C (158–212°F). These traditional saunas are characterised by very low humidity.

Key Health Benefits

The main health benefits of a traditional style sauna include:

• Strong cardiovascular conditioning (increasing the heart rate similar to moderate exercise)

• Improved blood vessel flexibility

• Reduced blood pressure over time

• Strong association with reduced all-cause mortality

Longevity Evidence

Traditional saunas have the strongest long-term data, including large Nordic cohort studies which show a 20–40% lower all-cause mortality with frequent use. This is also linked to a reduced risk of sudden cardiac death and stroke.

Traditional Saunas Are Best For:

✔ Longevity benefits

✔ Heart health

✔ Stress resilience

✔ People who tolerate high heat

Infrared saunas differ from traditional saunas by using specialized light panels to heat the body directly - rather than heating the surrounding air. They operate at lower ambient temperatures of around 45–60°C (113–140°F) - but provide a dry, intense, deeper penetrating heat.

This deeper penetration can potentially provide better muscle relaxation than traditional saunas.

Key Health Benefits

The main benefits of an infrared sauna include:

• Easier heat tolerance

• Muscle relaxation and recovery

• Reduced joint stiffness

• Improved circulation

Longevity Perspective

Infrared saunas lack the long-term mortality data of traditional saunas but offer:

• Easier accessibility for beginners and home users with fully enclosed style units and sauna blankets available

• Greater consistency for people sensitive to heat

• Strong recovery and relaxation benefits

Infrared Saunas Are Best For:

✔ Beginners

✔ Recovery and joint comfort

✔ Home use and convenience

Read our guide to the best infrared sauna blankets here.

Steam rooms differ from traditional saunas and infrared saunas by providing moist heat with very high humidity. This is at lower temperatures than dry saunas at roughly 43-49°C (110–120°F).

Steam rooms are usually made of tiles or glass, and use a steam generator to create moist heat that hydrates skin, sooths muscles and clears congestion. Steam rooms have near 100% humidity whereas saunas are dry with only 5-10% humidity.

Key Health Benefits

The main health benefits of using a steam room are:

• Respiratory comfort

• Sinus and airway relief

• Skin hydration

• Relaxation

Longevity Perspective

Steam rooms offer fewer cardiovascular benefits due to lower heat stress than a traditional sauna but can:

• Support respiratory health

• Aid relaxation and stress reduction

Steam Rooms Are Best For:

✔ Providing respiratory comfort and alleviating congestion

✔ Skin hydration

✔ Relaxing muscles

✔ People who dislike dry heat

If longevity is your main goal from using heat therapy, traditional saunas come out on top due to the cardiovascular stress and supportive mortality data.

However, if consistency is your biggest barrier and you don't easily have access to a traditional sauna or the expense required for a home setup, an infrared sauna (or blanket) may deliver more real-world benefit by being easier to use regularly.

If respiratory comfort is your priority, steam rooms can be helpful, though don't offer siginificant longevity benefits when used alone.

To take advantage of strong health benefits - you should aim to use the sauna 2–3 times per week. The Finnish longevity study associated this with a 24% lower risk of death.

However, those who use the (traditional) sauna 4–7 times per week achieved the maximum longevity benefits associated with a 40% mortality reduction (compared to those who used the sauna only once per week.)

Aim for 10–20 minutes per session, and remember to hydrate well and listen to your body.

Combining heat and cold exposure is a powerful combination that allows you to enjoy the health benefits of both together. Science has shown that using both toegther offers synergistic benefits to improve cardiovascular health and reduce stress.

These benefits include:

• Improved circulation

• Better recovery

• Greater stress resilience

• Reduced inflammation

• Better sleep and relaxation

This contrast therapy is common in Nordic cultures and fits perfectly into a longevity-focused routine.

Suggested guidelines for combining sauna and cold plunges together into a routine would be having a suana session of 12-15 minutes, followed by a cold plunge of 1-3 minutes. Then repeat this cycle 2-3 times depending on your tolernace levels.

Remember that the health beenfits of saunas don't work in isolation. Saunas work best when paired with:

• Strength and cardio training

• Quality sleep

• Good nutrition

• Stress management

This systems-based approach is exactly what we outline inside the Biohacker’s Longevity Starter Kit — helping you combine tools like sauna, cold plunge and recovery into a full longevity focused system.

There is no single “best” option for everyone, and often the choice of whether you use a traditional, infrared or steam sauna will come down to availability, your budget, space etc.

However, overall the 'best' option for you may come down to the following factors:

• Best for longevity: Traditional sauna

• Best for convenience: Infrared sauna

• Best for respiratory comfort: Steam room

Don't forget - the best choice is usually the one you’ll use consistently and safely!

Try the different options to see which is best for you, and start building them into your routine to enjoy the numerous health benefits on offer.