Does an infrared sauna help with pain and inflammation?

Probably, for the kind of everyday stiffness and muscular or joint pain that heat has always helped, and the small studies on infrared saunas specifically are cautiously encouraging for conditions like arthritis and chronic pain. This is one of infrared’s more plausible claims, more so than the weight-loss and detox stories.

The honest catch is that the research is limited: small studies, short durations, and often no strong control, so the confident claims outrun the evidence. Treat it as a promising, low-risk thing to try for pain relief, not a proven treatment.

Heat as pain relief is old and well founded. Infrared is one comfortable way to deliver it, with early evidence that is better than nothing but far from settled.

Why would heat help pain at all?

Because warmth genuinely eases muscle and joint discomfort.

Applying heat relaxes muscle, increases blood flow to an area, reduces stiffness, and dampens the sensation of pain. This is why a hot bath, a heat pack, or a sauna feels so good on a stiff back, an aching joint, or tight muscles, and it is well-established as symptomatic relief. Our ice versus heat guide covers when heat is the right tool.

An infrared sauna warms your body at a lower air temperature than a traditional sauna, which many people with pain find more comfortable and tolerable for longer sessions. That comfort is part of its appeal for pain specifically.

So the mechanism, heat easing stiffness and muscular pain, is real and uncontroversial. The open question is only how much the sauna format adds and lasts.

What does the actual research show?

Small, cautiously positive studies, not strong proof.

There are some genuinely encouraging small studies. Research on infrared sauna use in people with rheumatoid arthritis and ankylosing spondylitis, including work by Oosterveld and colleagues (2009), found short-term improvements in pain and stiffness and no adverse effects, though the effects were modest and the studies small. Some studies on chronic pain and conditions like fibromyalgia have reported reductions in pain and improved wellbeing.

The consistent limitation is that these are small trials, often without robust controls or long follow-up, so they show promise and safety rather than definitive benefit. It is a hopeful but thin evidence base.

This is why honest sources say infrared may help with pain, not that it is proven to. The direction is positive, the certainty is not high. Our sauna benefits guide covers the broader picture.

Does it reduce inflammation in a meaningful way?

Unclear, and easy to overstate.

Heat therapy can influence circulation and some inflammatory markers, and reducing pain and stiffness is real. But the leap from that to a claim that infrared saunas meaningfully reduce systemic inflammation or treat inflammatory disease is not well supported by strong evidence.

Inflammation is also not simply a villain to be minimised, since it is part of healing and normal function, so blanket anti-inflammatory claims deserve skepticism. What you can reasonably expect is symptomatic relief of pain and stiffness, not a cure for an underlying inflammatory condition.

If you have an inflammatory or autoimmune condition, an infrared sauna might make you feel better symptomatically, but it is an add-on to real medical treatment, not a replacement. Our practitioner credentials guide is a reminder to keep real conditions with real clinicians.

Infrared or traditional for pain?

Either helps, and infrared is often more comfortable.

The pain relief comes largely from heat, which both deliver. Traditional saunas are hotter, which some find more intensely relieving but harder to tolerate for long, while infrared runs cooler and is often more comfortable for a longer, gentler session, which suits people managing chronic pain. Our infrared versus traditional guide covers the difference.

The small pain studies happen to focus on infrared, but there is no strong reason to think traditional heat would not also help stiffness and muscular pain. Choose by comfort and what keeps you consistent.

Consistency matters here too, since heat is symptomatic relief that fades, so a regular gentle habit tends to serve better than an occasional intense one.

Who should be careful?

The usual heat cautions, and more so with some conditions.

Because a sauna raises heart rate and can lower blood pressure, people with heart conditions, unstable blood pressure, or who are pregnant should check with a doctor first. Our sauna and heart guide and pregnancy safety guide cover those cautions.

Some conditions and medications affect heat tolerance or sensation, so if you have a chronic illness, neuropathy, or take medication that impairs your ability to sense heat or regulate temperature, get medical advice before regular sauna use. Stay hydrated, keep sessions sensible, and get out if you feel faint.

For a generally healthy person with everyday aches, it is low-risk and worth trying. For a medical condition, it is a conversation with your doctor first.

The bottom line

Heat reliably eases stiff, painful muscles and joints, and small studies on infrared saunas for arthritis and chronic pain are cautiously positive, making this one of infrared’s more plausible benefits. But the evidence is thin, so treat it as promising symptomatic relief, not a proven treatment.

Try it for comfort and stiffness if you enjoy the heat, keep it as an add-on to proper care for any real condition, and clear it with your doctor if you are at risk.

To find an infrared sauna near you, start with our city wellness maps.