What the world's leading researchers think about saunas
Summary
NPR health reporter Will Stone explores the emerging science of heat therapy at the first global symposium on sauna research in Norway. He discusses efforts by the Sauna Research Foundation to standardize study protocols and separate wellness hype from rigorous evidence. The episode covers potential cardiovascular and metabolic benefits, particularly for those unable to exercise, and examines biological links between heat exposure and mental health. Stone also shares his experience at a floating sauna in Oslo, highlighting the social and digital detox aspects of the practice.
Topics discussed
Introduction and sponsor announcements
Setting the scene: Saunas in Oslo and the wellness trend
The gap between sauna hype and scientific evidence
Sponsor breaks: Edward Jones, Planet Visionaries, Google
Types of heat therapy and the first global symposium
Organizing the field: Standards and the Sauna Research Foundation
Challenges in research: Small studies and lack of blinding
Defining protocols: Consensus on measurements and definitions
Acute physiological responses and historical thermal experiments
Cardiovascular benefits: Heat as an exercise mimetic
Treating disease: Research on metabolic and elderly health
Mental health, social connection, and the floating sauna experience
Biological mechanisms linking heat therapy to mood regulation
Practical advice: How to start sauna-ing safely
Closing remarks and production credits
Sponsor breaks: Mint Mobile and Bowl & Branch
Listen ad-free on Castria