How Cold Showers Impact Health
Research led by psychologist Lena Glaser at the University of Basel has revealed that regularly taking cold showers can lower sick leave by 31%. This conclusion comes from analyzing three separate experiments involving a total of 719 participants. Those who incorporated cold showers experienced 26% fewer days of illness compared to individuals who used warm water.
Earlier research from 2016 also suggested that cold showers reduce work absences due to illness by 29%. However, the new findings have yet to undergo independent peer review. Participants self-reported their health status, and groups were organized based on actual cold shower frequency rather than random assignment. Among those who took cold showers at least 70% of the time, between 77.3% and 90% maintained this habit weekly. Notably, many participants dropped out within the first two weeks of the trial.
Benefits and Practical Advice
While the study did not explore the biological processes behind cold water’s effects, evidence from 2024 indicates enhanced immune signaling in individuals who regularly take cold showers. Similar immune responses have been observed in studies involving cold water immersion.
Lena Glaser commented, "This suggests that people gradually adapt to the cold."
She also noted that "the water doesn’t have to be equally cold every day." The findings highlight cold showers as an accessible and cost-effective method to support employee health. However, researchers stress the need for further studies to confirm the link between cold showers and reduced sickness, as well as to better understand the underlying biological mechanisms.
Experts recommend a gradual approach:
- slowly lowering the water temperature;
- monitoring how you feel during the process.
The research results were published on November 5 at 16:36 in the journal Science Alert.
These findings emphasize the potential health advantages of cold showers, which could be significant for both employers and employees. Should additional research validate these outcomes, workplaces might consider encouraging cold shower routines as part of wellness programs, potentially reducing healthcare costs by decreasing illness-related absences. Nevertheless, it remains crucial to further verify these results and clarify how cold showers influence health on a biological level.
In addition to the benefits of cold showers, recent research has shown that soaking in warm water can also have significant health advantages. For instance, a study found that immersing oneself in 40°C water for 30 minutes effectively lowers blood pressure more than cycling. Such findings illustrate the diverse ways in which temperature exposure can influence our well-being. To explore more about the health impacts of different water temperatures, read about how warm water immersion can benefit cardiovascular health.