Scientists find unexpected life on Ötzi the Iceman’s 5,300-year-old body
More than 5,000 years after his death, Ötzi the Iceman is still hosting a remarkable mix of ancient and modern microorganisms. Researchers separated microbes that lived in his body during his lifetime from those that arrived after his death, uncovering traces of his original gut bacteria and cold-loving yeasts that may have survived alongside him in the glacier for millennia.
Scientists have discovered ancient and modern microorganisms on Ötzi the Iceman's 5,300-year-old body, revealing a dynamic biological system within the frozen remains. Researchers employed various sampling methods to analyze ice, meltwater, and swabs collected from the mummy's surface, as well as data from previous intestinal and stomach tissue studies.
Genetic material recovered from internal tissues included bacteria originally found in Ötzi's gut flora, which closely resembles early human populations and provides insight into pre-modern microbiomes. The team also made an unexpected discovery of cold-adapted yeast species, likely originating from the glacier and remaining with the mummy for thousands of years.
These yeasts, related to Antarctic strains, may eventually prove useful in industrial processes. The findings, published in the journal Microbiome, suggest that the mummy is not a static relic but a living biological system maintained under stable, cold, and humid conditions. The presence of both ancient and modern DNA indicates that the microorganisms are not merely historical remains but continue to survive under current storage conditions.
The mummy's microbiome demonstrates a unique blend of past and present, with three of the four yeast species having the genetic ability to break down phenol, a substance used to remove fungal growth during preservation efforts. Researchers emphasize the need for further studies and conservation efforts to better understand and preserve Ötzi and other ancient remains, while also exploring potential industrial applications of cold-adapted microorganisms.
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