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DCA-Producing Gut Bacteria Boost Colorectal Tumors in Mice

8/18/2026

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Summary

Story summary

German researchers led by Annika Osswald proved that DCA-producing gut bacteria increase colorectal tumor growth in mice.
Mice given DCA-producing bacteria developed larger tumors and faster cell division than bacteria-free mice.
Stool samples from over a thousand people showed DCA-bacterial genes were more frequent in colorectal-cancer patients.
Sören Ocvirk said the findings link Western high-fat diets to harmful gut-microbiome changes.

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Story summary

German researchers led by Annika Osswald proved that DCA-producing gut bacteria increase colorectal tumor growth in mice.
Mice given DCA-producing bacteria developed larger tumors and faster cell division than bacteria-free mice.
Stool samples from over a thousand people showed DCA-bacterial genes were more frequent in colorectal-cancer patients.
Sören Ocvirk said the findings link Western high-fat diets to harmful gut-microbiome changes.