Saunas for Fibromyalgia: What the Research Shows

People with fibromyalgia often ask whether gentle heat can ease widespread pain and fatigue without triggering a flare. The research is early but encouraging, especially for far infrared heat, which warms the body at lower, more tolerable temperatures. This guide covers what the studies found, how to use a sauna safely with fibromyalgia, and what to check with your clinician first.

Short answer: small clinical studies suggest regular sauna sessions may reduce fibromyalgia pain, stiffness, and fatigue, with some participants reporting meaningful and lasting improvement. The strongest evidence comes from far infrared heat used at moderate temperatures, roughly 60 degrees C or 140 degrees F, for short sessions a few times per week. Heat is not a cure and results vary, but it is a low-risk complement to your existing care for many people. Because fibromyalgia can come with heat sensitivity, low blood pressure, or other conditions, start gently, keep sessions short, hydrate well, and clear it with your clinician before you begin.

What the research shows

Several small studies have looked at heat therapy for fibromyalgia. Research on far infrared Waon therapy, using about 15 minutes at 60 degrees C followed by rest, reported reduced pain and improved symptoms in fibromyalgia patients, with benefits that persisted after the treatment period. A 2025 pilot study in Frontiers in Pain Research and broader heat-therapy reviews point in the same direction: modest but real improvements in pain and quality of life. The studies are small, so the evidence is promising rather than conclusive, and the most direct data uses far infrared saunas specifically.

Why far infrared often suits fibromyalgia

Traditional saunas run hot, which some people with fibromyalgia find hard to tolerate. Far infrared warms your body directly at a lower ambient temperature, so you get a deep, sweat-inducing warmth without a punishing room temperature. That gentler heat is why most fibromyalgia research and most home users lean infrared. You can read more on how the heat works in our overview of far infrared sauna benefits.

How to start safely

Begin with short 10 to 15 minute sessions at a moderate temperature, two or three times a week, and increase only if you feel good the next day. Hydrate before and after, cool down slowly, and never push through dizziness. Because fibromyalgia often overlaps with fatigue and autonomic issues, track how you feel for a day after each session rather than judging it in the moment. Our sauna safety guidelines cover session length, hydration, and warning signs in detail.

Heat therapy fits a bigger picture

Fibromyalgia responds best to a combined approach: gentle movement, sleep, stress management, and clinician-guided care. Many people pair heat with those. If stress and sleep are part of your picture, our guides on saunas for anxiety and stress and saunas for sleep may help. Sauna use is a complement to that care, not a replacement for it.

A safety note

Talk to your clinician before starting, especially if you have heart disease, low blood pressure, are pregnant, take medication that affects hydration or blood pressure, or have heat intolerance. Stop and cool down if you feel faint, nauseated, or your symptoms worsen. This page is educational and is not medical advice.

Frequently asked questions

Which sauna is best for fibromyalgia? Most research and most home users favor far infrared, because it delivers deep warmth at a lower, more tolerable room temperature than a traditional hot sauna.

How often should I use a sauna for fibromyalgia? Studies commonly used short sessions two to three times per week. Start there, keep sessions to 10 to 15 minutes, and adjust based on how you feel the following day.

Can a sauna make fibromyalgia worse? Overdoing heat can trigger fatigue or a flare in some people. Short, moderate sessions with good hydration and clinician guidance keep the risk low.

If gentle, tolerable heat sounds worth trying, explore low-EMF far infrared options in our infrared saunas collection, with free US shipping, HSA and FSA eligibility with a Letter of Medical Necessity, and financing. Questions about the right size or heat type? Contact our team.