Compare: Infrarot- vs. klassische Sauna

⚠ Both need care with heat, alcohol, pregnancy and heart conditions. See Cautions.

Summary

Both cabinets cost money; an ordinary hot bath costs nothing. In the single strongest heat trial, a hot bath produced artery and blood-pressure gains the authors likened to taking up exercise. If you do want a cabinet, the two differ on how hard they heat and how deep their evidence runs. A traditional sauna reaches up to 212°F (100°C); infrared tops out near 140°F (60°C).

How They Compare

The Heat And Mechanism Difference

A traditional sauna heats the air to 176–212°F (80–100°C) and warms you from the outside by convection. Throwing water on the hot stones raises the humidity, the löyly that gives a Finnish sauna its character. An infrared cabin stays around 113–140°F (45–60°C), and its radiant panels warm the body directly. Both raise core temperature, and that rise is the stimulus the body adapts to. Infrared reaches the same core temperature with much cooler air. The trade is heat dose against comfort: the hotter room delivers a bigger, faster load per minute, and the cooler room is easier to stay in for longer.

Depth Of Evidence

The strongest evidence in the field is a long observation of Finnish sauna users. In a cohort of 2,315 middle-aged men followed for a median of about 21 years, frequent use tracked with far lower sudden cardiac death. The hazard ratio was 0.37 for four to seven sessions a week versus one, alongside lower cardiovascular and all-cause mortality. Dementia risk ran about a third as high, at 0.34, and Alzheimer's disease about the same, at 0.35, against once-a-week use. These findings are associations and do not prove cause. They also carry a healthy-user confound, since fitter men tolerate frequent hot saunas more easily. Infrared has no equivalent: no cohort has followed infrared users to these hard outcomes.

Blood Pressure And Cardiovascular

Infrared has the more targeted short-term cardiovascular data. A review of the far-infrared literature found fair evidence that it helps normalize blood pressure and supports treatment of congestive heart failure. The same review did not support the claim that it lowers cholesterol. In men with coronary risk factors, two weeks of a daily 140°F (60°C) far-infrared sauna improved flow-mediated dilation from about 4.0 to 5.8 percent. Flow-mediated dilation measures how well the arteries open. A meta-analysis of Waon therapy, a Japanese far-infrared protocol, found short-term gains in heart-failure markers such as B-type natriuretic peptide and ejection fraction. These are small, short studies that measure markers over weeks, so the evidence is early and not yet proven. The long-term cardiovascular outcomes were measured on the traditional sauna.

Pain And Recovery

In 34 people with rheumatoid arthritis or ankylosing spondylitis, eight infrared sessions over four weeks eased pain and stiffness in the short term. They were well tolerated with no adverse effects, though the study was an uncontrolled pilot. In active men, sitting in a far-infrared cabin after endurance training restored jumping power faster than doing nothing did. Session heart rate was much lower in the cabin, about 71 beats a minute against 92 in a traditional sauna, a direct sign of the gentler load. After strength training the same study found no added benefit from the cabin, so the recovery help is specific to some kinds of training.

Tolerability And Cost

For comfort and access, infrared usually has the edge:

• Radiant heat warms the body at a lower air temperature, so an infrared cabin is easier to sit in for longer. That suits people who struggle in full heat, from the heat itself or a sensitive heart.
• Home infrared units tend to cost less, run on ordinary household power, and heat up quickly.

The traditional sauna's air, past 200°F, gives the bigger heat dose and the löyly that many come for. It is the version the long-term data comes from, and it usually costs more to build and takes longer to reach temperature. The heat exposure page covers every route into heat, from a warm bath to a full cabin.

The Safety Difference

Heat raises heart rate and lowers blood pressure, and that strain scales with temperature and time. The hotter traditional sauna, up to 212°F, loads the heart more per minute than the cooler infrared cabin. For most healthy people both are well tolerated.

The Research & Studies

Everything here is based on the research we have collected and checked, sorted into groups and ordered with the strongest evidence first. Click any claim to open the studies behind it.

How it works

Beide erhöhen die Körperkerntemperatur: die traditionelle Sauna erhitzt die Luft auf 176–212°F (80–100°C), Infrarot wärmt den Körper mit Paneelen bei 113–140°F (45–60°C)Moderate · mixed

In plain terms

Eine traditionelle Sauna erhitzt die Luft sehr stark; eine Infrarotkabine bleibt kühler und wärmt Ihren Körper direkt mit Strahlungspaneelen. Beide erhöhen Ihre Körperkerntemperatur, worauf es ankommt.

In detail

Ein systematisches Review zum Trockensaunabaden beschreibt die beiden Verfahren: Traditionelle finnische Saunen erhitzen die Luft auf etwa 176–212°F (80–100°C) und wärmen den Körper hauptsächlich durch Konvektion, während Infrarotsaunen Strahlungsheizungen bei etwa 113–140°F (45–60°C) nutzen, die Energie direkt auf den Körper übertragen. Das physiologische Ziel ist bei beiden ein kontrollierter Anstieg der Körperkerntemperatur, mit der darauffolgenden Rötung, Schweißbildung und dem Anstieg der Hautdurchblutung. Da Strahlungswärme den Körper direkt erwärmt, kann eine Infrarotkabine die Körperkerntemperatur bei einer deutlich niedrigeren Lufttemperatur erhöhen, weshalb sie sich länger besser tolerierbar anfühlt.

The study · 1

Hussain & Cohen, clinical effects of regular dry sauna bathing: a systematic review · Evid Based Complement Alternat Med 2018;2018:1857413

Eine Infrarotsitzung erhöhte bei 10 gesunden Frauen die Körperkerntemperatur um etwa 1.05°C, ohne signifikante Veränderung von Blutdruck oder HerzfrequenzvariabilitätEmerging · mixed

In plain terms

Bei gesunden Frauen erwärmte eine Infrarotsitzung den Körper um etwa ein Grad, bewegte aber Blutdruck oder Herzfrequenzvariabilität kaum, sodass ihre kardiovaskuläre Belastung mild ist.

In detail

Die Crossover-Studie verglich Infrarotsauna, moderates Training und eine Kontrolle bei 10 gesunden Frauen mit einem Durchschnittsalter von 36 Jahren. Die tympanale Temperatur stieg während der Infrarotsitzung um etwa 1.05 Grad Celsius über die Kontrolle und 0.79 Grad über das Training, während Blutdruck, arterielle Steifigkeit und Herzfrequenzvariabilität keine signifikanten Unterschiede zur Kontrolle zeigten. Die Autoren kamen zu dem Schluss, dass die Infrarotreaktion durch Thermoregulation angetrieben wird, nicht durch die kardiorespiratorische Aktivierung von Training, sodass Infrarot besser als milde Wärmebelastung zu verstehen ist denn als Ersatz für ein Training.

Who this may not transfer to:Tested only in 10 healthy women, so whether the same mild load holds in men, or in older or unwell people, is untested.

The study · 1

Hussain et al., infrared sauna as exercise-mimetic? Physiological responses to infrared sauna vs exercise in healthy women: a randomized controlled crossover trial · Complement Ther Med 2022;64:102798

Heart And Vascular

Zwei Wochen tägliche Fern-Infrarotanwendung hoben bei 25 Männern mit kardialen Risikofaktoren die flussvermittelte Dilatation von 4.0 auf 5.8 Prozent anEmerging

In plain terms

Bei Männern mit Risikofaktoren für Herzerkrankungen verbesserten zwei Wochen tägliche Fern-Infrarotsauna, wie gut sich ihre Arterien öffneten.

In detail

The controlled study enrolled 25 men with at least one coronary risk factor (mean age 38) alongside 10 healthy controls. Participants had a far-infrared dry sauna at 140°F (60°C) for 15 minutes once a day for two weeks, then rested in a warm room. Flow-mediated dilation of the brachial artery rose from 4.0 to 5.8 percent (p less than 0.001) in the at-risk men, with no such change measured in a non-treated comparison, and forearm blood flow also improved. It is a small, short study of a surrogate marker, not a hard outcome.

Who this may not transfer to:The treated group was men, so whether the same artery-function gain occurs in women is untested.

The study · 1

Imamura et al., repeated thermal therapy improves impaired vascular endothelial function in patients with coronary risk factors · J Am Coll Cardiol 2001;38(4):1083-1088

Waon far-infrared therapy improved heart-failure markers across nine pooled studies, lowering BNP and raising ejection fractionEmerging

In plain terms

Pooling nine studies, a far-infrared heat protocol produced short-term improvements in several heart-failure measures, though long-term data is missing.

In detail

The systematic review and meta-analysis pooled nine studies (seven in the quantitative analysis) of Waon therapy, a Japanese far-infrared sauna protocol delivering 140°F (60°C) for 15 minutes followed by a 30-minute rest, five times a week for 2 to 4 weeks, in patients with heart failure. It reported short-term improvements in B-type natriuretic peptide, cardiothoracic ratio and left-ventricular ejection fraction. The trials were small and mostly from a single country, and the review notes the need for larger, longer studies before this becomes a settled treatment.

Who this may not transfer to:The pooled studies do not give a combined sex breakdown, so whether the effect differs for women and men is untested.

The study · 1

Kallstrom et al., effects of sauna bath on heart failure: a systematic review and meta-analysis · Clin Cardiol 2018;41(11):1491-1501

A review of nine papers found limited-to-moderate evidence far-infrared helps normalize blood pressure, with no support for lowering cholesterolEmerging

In plain terms

A review found reasonable early evidence that far-infrared sauna helps with blood pressure and heart failure, and it did not support the cholesterol claims sometimes made for it.

In detail

The review of nine published papers graded the evidence for far-infrared sauna across cardiovascular risk factors. It reported limited-to-moderate evidence for normalizing blood pressure and for treating congestive heart failure, and fair single-study evidence for chronic pain, and consistent fair evidence against the claim that it reduces cholesterol. This is a small and uneven body of work, so the blood-pressure signal is early, not established, and it does not yet approach the depth of the traditional-sauna outcome cohorts.

Who this may not transfer to:The reviewed studies are not summarized by sex, so whether the blood-pressure benefit differs for women and men is untested.

The study · 1

Beever, far-infrared saunas for treatment of cardiovascular risk factors: summary of published evidence · Can Fam Physician 2009;55(7):691-696

Pain

Eight infrared sessions over four weeks eased pain and stiffness short-term in 34 people with rheumatoid arthritis or ankylosing spondylitisEmerging

In plain terms

In people with rheumatoid arthritis or ankylosing spondylitis, infrared sessions eased pain and stiffness in the short term and were well tolerated.

In detail

The pilot study treated 17 patients with rheumatoid arthritis and 17 with ankylosing spondylitis with eight infrared sauna sessions over four weeks. Pain and stiffness fell significantly during the sessions (p less than 0.05 for rheumatoid arthritis, p less than 0.001 for ankylosing spondylitis), fatigue improved, and the treatment was well tolerated with no adverse effects and no rise in disease activity. Improvements measured across the four weeks were clinically felt but did not reach statistical significance, and there was no control group, so this is an early before-and-after signal.

Who this may not transfer to:The study does not report a sex split, so whether the relief differs for women and men is untested.

The study · 1

Oosterveld et al., infrared sauna in patients with rheumatoid arthritis and ankylosing spondylitis · Clin Rheumatol 2009;28(1):29-34

Exercise Recovery

After endurance training, infrared aided jump-power recovery; session heart rate ran 71 versus 92 beats a minute against a traditional saunaEmerging

In plain terms

In active men, sitting in a far-infrared cabin after endurance training helped jump power recover, and the session itself was much easier on the heart than a traditional sauna.

In detail

The crossover study put 10 healthy, physically active men through far-infrared bathing, traditional sauna and no sauna after strength and endurance sessions. After endurance training, counter-movement jump at 30 minutes was significantly higher following far-infrared bathing, 13.4 inches (0.34 m), than no sauna, 12.6 inches (0.32 m). Heart rate during the far-infrared session averaged 71 beats a minute against 92 in the traditional sauna, reflecting the lower air temperature and humidity. After strength training, far-infrared bathing produced no measurable advantage over no sauna. It is a very small study in men.

Who this may not transfer to:Only men were studied, so whether the recovery benefit and the session heart-rate difference are the same in women is untested.

How to use it

If recovery after endurance work is the aim, the gentler infrared cabin is a reasonable choice; after strength work this study found no added benefit, so do not count on it there.

The study · 1

Mero et al., effects of far-infrared sauna bathing on recovery from strength and endurance training sessions in men · SpringerPlus 2015;4:321

Longevity And Mortality

Traditionelle Sauna 4- bis 7-mal pro Woche: bei finnischen Männern etwa 63 Prozent niedrigerer plötzlicher Herztod (Hazard Ratio 0.37)Preliminary

In plain terms

Finnische Männer, die am häufigsten eine traditionelle Sauna nutzten, hatten über 20 Jahre deutlich weniger Herztode, und diese Art von Langzeit-Ergebnisevidenz existiert für die traditionelle Sauna, aber noch nicht für Infrarot.

In detail

Die Kuopio-Ischaemic-Heart-Disease-Kohorte verfolgte 2,315 Männer im Alter von 42 bis 60 Jahren im Median 20.7 Jahre lang. Im Vergleich zu einmal wöchentlicher Saunanutzung ging eine Nutzung 2- bis 3-mal und 4- bis 7-mal pro Woche mit fortschreitend geringerem Risiko einher: Hazard Ratios für plötzlichen Herztod von 0.78 und 0.37, mit ähnlichen inversen Assoziationen für tödliche Herz-Kreislauf-Erkrankung und Gesamtmortalität, nach Adjustierung für die üblichen kardiovaskulären Risikofaktoren. Dies waren traditionelle finnische Saunen, und keine Infrarotkabine wurde in diesem Umfang oder Zeitrahmen bis zu harten Endpunkten nachverfolgt, was der zentrale Unterschied in der Evidenz zwischen beiden ist.

Who this may not transfer to:The cohort was all men, so whether the same size of benefit holds for women is untested; the underlying cardiovascular physiology is shared, but the numbers are from men.

The study · 1

Laukkanen et al., association between sauna bathing and fatal cardiovascular and all-cause mortality events · JAMA Intern Med 2015;175(4):542-548

Cognition

Traditionelle Sauna 4- bis 7-mal pro Woche: bei finnischen Männern etwa ein Drittel des Demenzrisikos (Hazard Ratio 0.34)Preliminary

In plain terms

Dieselben Männer, die am häufigsten eine traditionelle Sauna nutzten, hatten etwa ein Drittel des Demenzrisikos von Personen, die sie einmal pro Woche nutzten, und auch diese Langzeitevidenz gilt für die traditionelle Sauna, nicht für Infrarot.

In detail

Bei der Nachverfolgung der Kuopio-Kohorte von 2,315 Männern im Alter von 42 bis 60 Jahren über median 20.7 Jahre wiesen Saunanutzung 2- bis 3-mal und 4- bis 7-mal pro Woche adjustierte Hazard Ratios von 0.78 und 0.34 für Demenz sowie 0.80 und 0.35 für Alzheimer-Krankheit auf, im Vergleich zu einmal wöchentlicher Nutzung. Die Assoziation ist eine Beobachtung und spezifisch für traditionelle Saunen; die deutlich kühlere Infrarotkabine hat keine vergleichbare Langzeit-Nachverfolgung zu kognitiven Endpunkten.

Who this may not transfer to:All participants were men, so whether the association holds at the same size in women is untested.

The study · 1

Laukkanen et al., sauna bathing is inversely associated with dementia and Alzheimer's disease in middle-aged Finnish men · Age Ageing 2017;46(2):245-249

When To Choose Which

Infrared suits someone who finds full heat hard to tolerate, wants a smaller load on the heart while they sit, or is working on recovery or joint comfort. Its evidence is tolerability and the early data on blood pressure, pain and recovery. The cooler cabin, near 140°F, lets most people sit comfortably for longer, which makes a weekly routine easier to keep.

The traditional sauna suits someone who tolerates high heat well and wants the deepest outcome evidence for the heart, mortality and brain. It is the version behind the 20-year outcome figures, and it delivers a larger heat load per minute.

Both raise core temperature, so the sauna that helps is the one you get into regularly and hot enough. Benefit shows up at 2 to 3 sessions a week and climbs with frequency, so consistency over years beats the occasional very hot session. A cooler cabin used weekly for years beats a hotter one you rarely use.

Go Deeper

• Heat exposure: the full evidence on heat, the mechanism, and every way in from a hot bath to a built sauna.
• Heat without a sauna: the hot-bath protocol with the best data, and how to get a heat dose with what you already have.
• Heat and cold: contrast therapy: pairing a sauna with a cold plunge, what the trend gets right, and where it runs ahead of the research.
• Hypertension: the blood-pressure benefit heat has the best evidence for, in the context of the condition it matters most for.

Cautions

Everything to be aware of is here, in one place. This practice suits most healthy people; a few situations call for real care.

The hotter traditional sauna at 176–212°F (80–100°C) is a larger acute cardiovascular load than a cooler infrared cabin

A review of the evidence on sauna bathing describes the acute physiology: skin blood flow rises, heart rate climbs, and blood pressure falls afterward, a load that scales with how hot and how long the session is. Because a traditional sauna runs far hotter than an infrared cabin, its acute cardiovascular strain is greater, which is part of why infrared is more tolerable for the heat-sensitive. The review reports sauna is well tolerated by most healthy people and flags the situations that call for care, including recent cardiac events, unstable angina, dehydration, alcohol use around sessions, and pregnancy.Laukkanen et al., cardiovascular and other health benefits of sauna bathing: a review of the evidence

Heart conditions, get cleared first

Both forms of heat raise heart rate and lower blood pressure. That is a real load on a compromised heart, and the hotter traditional sauna loads it more. If you have unstable angina, a recent heart attack, severe aortic stenosis, decompensated heart failure or an arrhythmia, talk to a doctor first. A cooler infrared cabin, used briefly, is the gentler place to start.

Alcohol and heat

Drinking before or during a sauna worsens the blood-pressure drop, blunts your sense of how hot you are getting, and raises the risk of fainting and dehydration. Alcohol and heat are a common thread in sauna deaths, so keep them apart for either cabin.

Pregnancy

Raising core temperature high in early pregnancy is generally advised against, so prolonged intense heat is best set aside, especially in the first trimester. Keep any heat moderate and sessions short, and check with your clinician before using a sauna of either kind.

Rise slowly and rehydrate

Blood pressure is low when you finish, so stand up slowly. If you feel lightheaded, sit down where you are instead of walking. You lose water and electrolytes in the heat, so drink water before and after and replace electrolytes on longer or hotter sessions.

Do not overdo the heat or the time

More heat and more time is not automatically more benefit, and it raises the strain. If you are older, unwell or new to it, start shorter and cooler and build up over weeks. Let how you feel set the dose; do not chase the hottest room you can bear.

Start slow, be smart, read the research, and consult a professional if you have any concerns. This is here to inform your choice, not make it for you.

Common Questions

Which is better for living longer, infrared or traditional sauna?

The long-term outcome evidence sits only with the traditional sauna. The figures for lower cardiovascular death, lower all-cause mortality and lower dementia risk all come from following Finnish sauna users for around 20 years. No long-term study has tracked infrared cabins to those outcomes. Infrared may well share the benefit, since it heats the core the same way, but no one has measured it over that span.

The figures for lower cardiovascular death, lower all-cause mortality and lower dementia risk all come from following Finnish sauna users for around 20 years.

Is infrared sauna easier on the body than a traditional one?

Yes, during the session. An infrared cabin runs far cooler than a traditional sauna, so it imposes a smaller acute cardiovascular load. A crossover trial in healthy women found an infrared session raised core temperature by about 1.8°F (1°C) while barely moving blood pressure or heart-rate variability. That gentleness is why infrared suits people who find full heat hard to tolerate. The flip side is a smaller heat dose per minute, so an infrared session needs a bit longer to reach the same core-temperature target.

Does infrared sauna actually do anything, or is it just marketing?

It has early but consistent evidence. A meta-analysis of the Waon protocol, a Japanese far-infrared method, reported short-term improvement in heart-failure markers. Small trials of 10 to 40 people point the same way on blood vessels, pain and recovery. The evidence works, but it lacks the depth and length of the traditional sauna's. One claim made for it, lowering cholesterol, the evidence does not support.

How hot and how long should each session be?

In a traditional sauna, the research used sessions of 10 to 20 minutes at full heat. An infrared cabin runs cooler, so give it a few more minutes to reach the same core temperature, often 20 to 40 minutes. Getting properly warm is the target, so you do not need the highest temperature you can stand. Start at the shorter, cooler end and build over a month.

Can I get the same benefit from a hot bath?

For the effect with the best trial evidence, largely yes. The strongest heat trial of all used hot baths, and its artery and blood-pressure gains were, in the authors' words, comparable to taking up exercise. A bath raises core temperature, the same stimulus a sauna uses. What a bath does not reach is the very high heart-rate load of a hot traditional sauna at up to 212°F, and the long-term longevity figures come from saunas. The best-studied hot-bath routine, and the rest of the at-home options, are on heat without a sauna.