Regularly having ice baths can alter human cells, latest evidence has shown.
A new study from the University of Ottawa has found that cold plunges can improve cellular resilience against stress.
As part of the trial, the team of researchers examined the impact of repeated cold water exposure on autophagic (the cells’ recycling system, which promotes cellular health) and apoptotic (the programmed cell death that gets rid of damaged cells) responses in young men.
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A total of 10 young men took part in the study, all of whom were classed as healthy. Across seven consecutive days, they underwent cold-water immersion at 14°C for one hour.
The research team also collected blood samples to look at the participants’ cellular responses before and after the exposure period.
First author Professor Glen Kenny said: “Our findings indicate that repeated cold exposure significantly improves autophagic function, a critical cellular protective mechanism.
“This enhancement allows cells to better manage stress and could have important implications for health and longevity.”
The findings have revealed that consistent cold plunges for a week increased autophagic activity and decreased cellular damage signals.
Fellow author Kelli King said: “By the end of the acclimation, we noted a marked improvement in the participants’ cellular cold tolerance.
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“This suggests that cold acclimation may help the body effectively cope with extreme environmental conditions.”
According to the researchers, proper autophagic activity could combat the development of several diseases.
Professor Kenny explained: “This work underscores the importance of acclimation protocols in enhancing human health, especially in contexts where individuals are exposed to extreme temperatures.”
Kelli King added: “We were amazed to see how quickly the body adapted. Cold exposure might help prevent diseases and potentially even slow down aging at a cellular level. It’s like a tune-up for your body’s microscopic machinery.”
Read more in Advanced Biology.
