Infrared sauna benefits are talked about a lot, and many of the claims online go further than the evidence. This guide sticks to what is well established, what is only suggested by early research, and what is marketing. It is not medical advice.
Quick Answer
An infrared sauna is a heated cabin that warms you with infrared panels at a lower air temperature than a traditional sauna. The clearest, everyday reasons people use one are relaxation, comfort and a regular wind-down routine. Larger health claims (detox, weight loss, curing conditions) are not supported by strong evidence, and most long-term sauna research was done on traditional Finnish saunas, not infrared.
What an Infrared Sauna Does Differently
A home infrared sauna uses panels that give off radiant heat, which warms your body directly. A traditional sauna heats the air with a stove and hot rocks. In practice that means:
Lower air temperature: typically about 120-140°F (most home infrared cabins top out at 140°F), versus about 150-195°F in a traditional sauna (see our sauna temperature guide).
Faster warm-up: makers typically list a preheat of about 20 minutes, versus 30-45 minutes for a stove-heated sauna.
No steam: the air stays dry.
For a full side-by-side, read infrared vs traditional sauna.
What Is Reasonably Well Supported
Relaxation and a Wind-Down Routine
Sitting in gentle heat, away from screens, is relaxing for most people. Having a sauna at home makes it easy to turn this into a regular habit, which is the main practical advantage of owning one.
Warming Up and Feeling Loose
Heat makes many people feel less stiff for a while. Many people use a session after exercise; the studies section below covers what research on that shows. This is a temporary comfort effect, not a treatment for any condition.
What Is Only Suggested by Early Research
Large Finnish studies on traditional sauna bathing have found associations between frequent use and better cardiovascular outcomes, for example a study published in JAMA Internal Medicine. These are observational studies: they show a link, not proof that saunas cause the result, and they do not tell us the same applies to infrared cabins. Some small studies on infrared exist, but they are limited in size and duration. The Harvard Health overview and the Mayo Clinic both describe the evidence as promising but limited.
The same is true of the much-quoted Finnish study linking frequent traditional sauna use with fewer dementia diagnoses in men: it shows an association, not proof, and it did not involve infrared cabins. Our article on infrared sauna and brain health explains what that study did and didn't find.
What Infrared-Specific Studies Have Looked At
Only a handful of studies used infrared (rather than traditional) saunas. Most were small, and several took place in hospitals with supervised sessions, so they don't show what a home sauna will do for you. Here is what they actually tested:
| Study | Who and what | What it found | Limits |
|---|---|---|---|
| WAON-CHF trial, Japan (2016) | 149 hospitalized patients with advanced heart failure; 15 minutes in a 140°F (60°C) far infrared sauna, then 30 minutes resting under a blanket, daily for 10 days | No serious side effects; walking distance and symptom class improved in the sauna group | The main blood-marker result was not statistically significant; supervised medical setting, not home use |
| Chronic pain study, Japan (2005) | 46 inpatients with chronic pain; half added daily far infrared sauna sessions to their usual treatment for 4 weeks | Both groups improved; the sauna group had lower anger scores, and more had returned to work 2 years later | Small, not blinded, and sauna was one part of a wider hospital program |
| Post-training recovery study, Finland (2015) | 10 physically active men using a far infrared sauna after strength and endurance sessions | No difference from skipping the sauna after strength training; after a hard endurance session, jump height 30 minutes later was slightly better than with no sauna. Researchers described it as light and relaxing | Very small; short-term measures only. More in our sauna and workouts guide |
| Systematic review (2018) | 40 studies of regular dry sauna use (infrared and traditional), 3,855 people | Most reported benefits; one small study found a temporary drop in sperm production that reversed after stopping | Only 13 were randomized trials, most had fewer than 40 people, and outcomes varied widely |
The honest summary: infrared saunas look well tolerated in these studies, but none of this shows that a home infrared sauna treats or prevents any condition.
Claims to Treat With Caution
Detox: sweat is mostly water and electrolytes. Your liver and kidneys filter your blood; there is no strong evidence that an infrared sauna meaningfully speeds this up.
Weight loss: a session makes you sweat, but fluid lost is regained when you drink. It is not a substitute for diet and exercise.
Treating or curing conditions: a sauna is not a medical treatment. If you have a health condition, ask your doctor first.
Who Should Be Careful
Pregnant women, people with an unstable cardiovascular condition, a fever, an open wound or skin condition, or anyone on medication that affects heat tolerance should check with a doctor before using any sauna. Men trying to conceive may want to limit sessions too, since one small study found sauna use temporarily lowered sperm production. Our session time and safety guide covers how long to stay in and how to cool down.
How to Use an Infrared Sauna at Home
Start short: 10-15 minutes at the lower end of the temperature range, and build up gradually.
Hydrate before and after; avoid alcohol.
Wear a towel or light, breathable clothing and sit on a towel.
Leave if you feel dizzy or unwell, and cool down gradually.
Choosing a Home Infrared Sauna
Match the cabin to your space and household: check the seat count and outside dimensions, the power requirements on each product page, and the EMF information if that matters to you (see low EMF infrared saunas). Our best home infrared saunas guide lists seven picks by size and need.
The Bottom Line
An infrared sauna is a comfortable, convenient way to relax in gentle heat, and it is easy to use consistently at home. Enjoy it for that, keep expectations realistic about the health research, and talk to a doctor if you have any medical concerns.
