Every study we read on this question

Trials in people (10)

• 8-week trial in 47 adults found more blood pressure drop with exercise plus sauna
  Randomized trial202247 peoplePoints to benefit
• 5-year trial in 129 people with severe heart failure: fewer heart events with sauna
  Trial, not randomized2009129 peoplePoints to benefit
• Trial in people with high blood pressure: sauna and running both lowered resting pressure
  Trial, not randomized1983Points to benefit
• 8-week trial in 41 adults with heart artery disease found no clear sauna effect
  Randomized trial202341 peopleNo difference
• 2-week trial in 188 people with heart failure: far infrared sauna raised heart pumping
  Randomized trial2008188 peoplePoints to benefit
• Trial in 19 young men: one sauna session did not clearly change blood pressure
  Randomized trial202019 peopleNo difference
• Trial in 150 people with heart failure: sauna did not clearly change blood hormones
  Trial, not randomized2017150 peopleNo difference
• Trial in 149 hospitalized people with heart failure: infrared sauna gave mixed results
  Randomized trial2016149 peopleMixed
• 4-week trial in 40 people with heart failure: sauna lowered a heart strain marker
  Randomized trial201140 peoplePoints to benefit
• 4-week trial in 54 people with heart failure: sauna raised heart pumping
  Randomized trial201154 peoplePoints to benefit

Population studies (4)

• Study of 2575 Finnish men: low sauna use went with higher death risk
  Population study: followed a group20242,575 peoplePoints to benefit
• Study of 2575 Finnish men: more sauna went with lower death risk, by inflammation
  Population study: followed a group20222,575 peoplePoints to benefit
• Study of 1621 Finnish men: frequent sauna went with less new high blood pressure
  Population study: followed a group20171,621 peoplePoints to benefit
• Study of 2315 Finnish men: frequent sauna went with lower sudden cardiac death risk
  Population study: followed a group20152,315 peoplePoints to benefit

Reviews (5)

• Pooled review of 15 studies: heat therapy lowered blood pressure, not heart rate
  Pooled review (meta-analysis)2021Points to benefit
• Pooled review of 16 studies: sauna lowered blood pressure, right away and over weeks
  Pooled review (meta-analysis)2020Points to benefit
• Pooled review of 16 studies: heat therapy raised heart pumping in heart failure
  Pooled review (meta-analysis)2020Points to benefit
• Pooled review of 9 studies in heart failure: infrared sauna had mixed results
  Pooled review (meta-analysis)2018Mixed
• Review of Waon therapy, a gentle dry-heat sauna treatment, in people with heart failure
  Systematic review2018No direction

Opinion (2)

• Review of 45 bath and sauna studies: sauna linked to lower heart disease, death
  Opinion or narrative review2026Points to benefit
• Review of sauna use: Finnish studies linked it to lower illness and death risk
  Opinion or narrative review2021Points to benefit