'It was very very good': Ötzi the Iceman's body is covered in ancient yeast — and scientists just used it to make a sourdough
A new study cultivated four strains of cold-adapted yeasts that had colonized Ötzi's body shortly after his death 5,300 years ago in the Alps.
A new study cultivated four strains of cold-adapted yeasts that had colonized Ötzi's body shortly after his death 5,300 years ago in the Alps. This r
Read Full Story at Live Science →Why This Matters
The discovery of Ötzi’s ancient yeasts offers a rare glimpse into the microbial ecosystems of the past, bridging microbiology with archaeology in a way that could redefine how we study long-dead humans. It also challenges the idea that food preservation and fermentation were purely practical endeavors, revealing them as cultural and biological collaborations between humans and microorganisms spanning millennia.
Background Context
Ötzi’s 5,300-year-old preserved body was discovered in 1991, offering an unparalleled snapshot of Copper Age life. Unlike most mummies, his remains retain traces of organic materials, including gut bacteria and now, domesticated yeasts likely used in early bread-making. This aligns with emerging evidence that fermentation was a cornerstone of Neolithic cuisine, long before written records.
What Happens Next
Further genetic analysis of these yeasts could reveal patterns of ancient trade routes or agricultural practices. Scientists may also attempt to reconstruct other lost microbial strains from similarly preserved remains, potentially unlocking new insights into prehistoric diets—or even biotechnological applications from ancient biomes.
Bigger Picture
This breakthrough reflects a growing trend in paleomicrobiology, where once-invisible microbial partners are being recognized as key to understanding human history. It also underscores how climate change—by thawing permafrost—could reveal even more such microbial time capsules, turning frozen archives into living laboratories.
