Michael Greger: Can Cold Showers Improve Immune Function?
M Michael Greger Video Summary · March 25, 2026 View Full Protocol → Key Takeaways Cold showers may reduce self-reported sick leave by 29% (though duration of sickness remains unchanged). Cold water immersion consistently doubles norepinephrine levels, which may suppress anti-tumor immunity based on animal studies. Cold water swimming shows no immune protection compared to…
