A kimchi-derived bacterium may help the body clear nanoplastics from the gut

We are all carrying microplastics, and one of the more intriguing recent findings suggests that traditional fermented foods may offer a practical way to remove them. Researchers in South Korea, publishing in Bioresource Technology, screened hundreds of bacterial strains and identified a specific lactic acid bacterium found in kimchi that clings tightly to nanoplastics in the gut, keeping them bundled together as they move through the intestine so they can be excreted rather than absorbed into the body.

In mice given this strain, plastic particles in the stool more than doubled, suggesting meaningfully better clearance. The idea is that the bacterial cells essentially grab onto the plastic particles and escort them out before they can cross into the bloodstream and accumulate in organs.

Two caveats worth noting: this is animal data, and the study was funded by the World Institute of Kimchi. But the mechanism is plausible, kimchi is already well-supported for gut health and immune function, and if live-cultured fermented vegetables can also help bind and eliminate plastic particles, that is a meaningful potential benefit in an era when avoiding nanoplastic exposure entirely is essentially impossible. Look for unpasteurized, live-culture kimchi to ensure the active bacteria are present.

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