New Clinical Trial Finds Heated Yoga Effectively Eases Symptoms of Depression

Extreme heat can worsen mental health through disrupted sleep, dehydration and medication risks, and research links higher temperatures with symptoms such as irritability, impaired concentration and elevated suicide risk—effects that may fall hardest on people with psychiatric conditions and limited access to cooling. At the same time, researchers are investigating whether controlled heat exposure, including sauna sessions, could support mental health; early findings and proposed biological mechanisms are promising, but evidence remains limited and experts say substantial research gaps remain. A separate study found that adults with moderate to severe depression who practiced heated yoga had reduced symptoms over eight weeks, with greater improvement among those who attended more sessions. Taken together, the reports distinguish potentially harmful exposure to environmental heat from structured heat-based activities that may have therapeutic benefits, while underscoring that the latter are still being studied.
Article 1 gives lithium as a specific medication risk during extreme heat: heavy sweating and fluid loss can raise blood levels toward toxicity, making hydration and medication guidance especially important.
In Oslo, researcher Eva Hilland is recruiting 50 people for a randomized controlled trial that pairs two weekly sauna sessions with mental-health habits, measuring outcomes including stress, well-being and sleep.
A University of Wisconsin–Madison trial cited in Article 3 found that infrared heat sessions raising participants’ core temperature to 38.5°C were followed by a 50% symptom reduction within a week for a majority of depressed participants.
The heated-yoga report says symptom improvements were seen across participants of different ages, sexes and educational backgrounds, and whether or not they were taking antidepressants.
Publishers
5
Articles
48
Reach
53