Home sauna demand rises as studies link regular use to heart health

SaunaHeaters.com is pointing homeowners to long-running Finnish research as U.S. demand for home saunas grows and the residential market takes the largest share. The studies suggest regular sauna use is associated with lower cardiovascular risk, but they do not prove saunas cause better heart health.

Why it matters: - Home sauna purchases are rising as more Americans invest in at-home wellness. - The global sauna market reached an estimated $954.3 million in 2025 and is projected to hit $1.56 billion by 2033, according to Grand View Research. - Residential use accounted for about 59% of demand in 2025, making the home market the biggest growth driver. - SaunaHeaters.com is using the research to help buyers separate evidence from marketing before they spend on a home sauna.

What happened: - SaunaHeaters.com highlighted two decades of Finnish research on regular sauna use and cardiovascular health. - Ryan Williams, Sauna Expert at SaunaHeaters, said buyers should look at the evidence rather than the marketing. - Williams said frequency matters more than any single sauna session. - The company also urged buyers to consult a physician before starting regular sauna use.

The details: - The best-known research comes from the Kuopio Ischaemic Heart Disease Risk Factor Study, a long-term cohort study in eastern Finland. - A 2015 JAMA Internal Medicine study followed 2,315 middle-aged men. - That study found more frequent sauna use was associated with a lower risk of fatal cardiovascular events. - The authors said more research is needed to explain the link between sauna use and heart health. - A 2018 BMC Medicine follow-up expanded the analysis to 1,688 men and women. - That study found that more frequent and longer sauna sessions were each linked to a lower risk of death from cardiovascular disease. - The 2018 researchers also said sauna frequency improved long-term prediction of cardiovascular death risk. - SaunaHeaters said the studies used traditional Finnish saunas heated to roughly 174°F, not infrared cabins, steam rooms or hot tubs. - SaunaHeaters said the studies were observational and show association, not proof that sauna use caused the outcomes. - SaunaHeaters said the participants were Finnish and grew up with sauna use as a cultural habit. - SaunaHeaters carries saunas and heaters from major brands and points buyers to the research instead of making health claims of its own. - The online store sells saunas, heaters, controls and accessories from HUUM, Harvia and SaunaLife. - SaunaHeaters also helps customers with sizing, wiring requirements, product comparisons and setup decisions.

Between the lines: - The research gives sauna sellers a credible way to talk about wellness without relying on inflated claims. - The limits matter because a U.S. buyer considering an infrared or steam setup is not looking at the same evidence base as the Finnish studies. - That gap makes cautious, evidence-based sales messaging more important as home sauna demand expands.

What’s next: - More homeowners are likely to compare sauna options as the residential market keeps growing. - Buyers who want to use a sauna several times a week may continue to look for guidance on whether the health research applies to their setup. - SaunaHeaters said it will keep directing shoppers to the long-running studies while avoiding medical claims.

The bottom line: - The research supports regular sauna use as a possible heart-health habit, but not as a medical treatment or a guarantee of better outcomes.