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Cold Water Changes Your Cells - And Science Says It Takes Just a Week

Published January 2, 2026, 10:21
Cold Water Changes Your Cells - And Science Says It Takes Just a Week

A new study from the University of Ottawa shows that daily exposure to cold water can reprogram the body's cells, enhancing repair and protective mechanisms. The study followed ten healthy young men who took short dips in 14°C water for one week. The results showed that exposure to cold water increased autophagy, a process of cellular cleansing and regeneration, reduced apoptosis (cell death) and inflammation, and improved adaptation to stress. Researchers observed that these changes occurred quickly, within just one week. Boosting autophagy is considered important for longevity and preventing age-related diseases, such as neurodegenerative, cardiovascular, and metabolic disorders. The study highlights that regular exposure to cold water can boost the immune system and improve overall health. However, researchers emphasize that the study had limitations, as it only involved men and there was no exposure to cold air. Further research with larger samples and different conditions is needed to confirm the results and draw safe conclusions.