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The original was posted on /r/science by /u/mvea on 2025-01-11 11:14:05+00:00.

Original Title: Researchers have discovered that weekly inoculations of the bacteria Mycobacterium vaccae, naturally found in soils, prevent mice from gaining any weight when on a high-fat diet. They say the bacterial injections could form the basis of a “vaccine” against the Western diet.