Sauna vs. Steam Room: Which Heat Therapy Is More Effective?

Heat therapy is a super—well, hot—topic in the well-being space. If you love the idea of getting a sweat on but are unsure whether to seek out a sauna or a steam room (or even what the difference is), you've come to the right place.

Both saunas and steam rooms bring your body into hormesis—a state of mild, controlled stress that can help repair cellular damage1 and support immunity2. By raising what energy specialist Ari Whitten called our "resilience threshold" on his episode of the mindbodygreen podcast, hormesis helps us better respond to all sorts of stressors—and be healthier and longer-lived because of it.

The difference between a sauna and a steam room comes down to the type of hormesis-inducing heat that they provide, explains Safdar Naueen, M.D., an internal medicine doctor at EHE Health. While a sauna is a dry heat, a steam room produces—as the name would suggest—a steamy, humid environment.

A sauna, with its dry heat at temperatures of 180 to 200 degrees Fahrenheit, is ideal for relieving sore muscles3, increasing blood flow4, and promoting faster recovery5 after a tough workout. Saunas have long been an essential health tool in Scandinavian countries, and their benefits are starting to go global.

"Steam helps loosen phlegm and mucus, improving congestion and breathing," says Safdar. However, research shows that if you have a respiratory illness or infection7, steam alone will not clear it up for you.

There isn't a ton of research on the other benefits of stepping into a steam room (saunas have been much more extensively studied), but Safdar adds steam sessions have been scientifically shown to temporarily stave off muscle soreness6 and reduce joint pain and stiffness8. "The steam helps the body relax, and stiff joints get some relief," she says.

The benefits of saunas are better studied, thanks to research largely out of Scandinavia. When taken regularly (about four to seven times a week), they have been associated with improved energy9, relieved pain10, reduced stroke risk11, immune support12, skin health13, and even reduced all-cause mortality risk14.

"The research on sauna use is just mind-blowing," says Whitten, who notes that if there was a drug that contained all the same benefits, everyone around the world would be raving about it. "Your doctor would look at you like you were absolutely nuts if you weren't taking this drug. That drug exists—it's just not in the form of a pharmaceutical. It's a sauna," he said on the mindbodygreen podcast.

Taking regular saunas can also support mental health and cognition. One notable study out of Finland in 201715 found that as people increased their sauna use per week from 2-3 times to 4-7 times, they decreased their dementia risk by nearly 50%.

"Now that we understand that toxins are one of the critical things that contribute to risk for cognitive decline, saunas are becoming very important [for cognitive health]," Dale Bredesen, M.D., author of The End of Alzheimer's, previously said on the mindbodygreen podcast.

As you can see, both saunas and steam rooms promote muscle relaxation, alleviate soreness, and help out the skin. However, saunas have been more extensively studied for their cardiorespiratory, cognitive, and overall mortality perks. Neither one is inherently better than the other, but saunas might be more beneficial for more people.

"There should be no issues for a healthy person to use the sauna and steam room in the same day," says Andrea Paul, M.D., medical advisor to Illuminate Labs. "Use them in whatever order you prefer, but be sure to hydrate between using the sauna and steam room because both can cause excessive sweating." 

Steam: Safdar recommends limiting your steam to 15 minutes given that the combination of heat and humidity can cause lightheadedness.

Saunas and steams can both cause dehydration, so you'll want to drink plenty of fluids before and after them. Safdar explains that they can both lower blood pressure17, which can cause lightheadedness and fainting if it happens too quickly. If you feel dizzy or unwell, step out of the heat immediately.

"Consult your doctor before you use either one, especially if you have any medical issues on medications, are pregnant or nursing," adds Safdar.