A bacterium found in kimchi can bind to nanoplastics under conditions similar to the human gut. In mice, giving this probiotic more than doubled the amount of nanoplastics later detected in feces. The finding points to a possible new role for microbes from fermented foods: helping the body carry tiny plastic particles out through waste.
The researchers describe this as a surprising potential use for microbes from a popular fermented food. Because the bacterium appears to stick to nanoplastics in gut-like conditions, it may prevent the particles from lingering in the digestive tract. The exact mechanisms and how well this works in the body are still being explored.
This analysis rests on a single study, so there are no independent findings to compare. The evidence comes from mice and laboratory conditions, not from humans. Still, the results offer a plausible avenue for future work on dietary or probiotic approaches to nanoplastic exposure. Further research will be needed to confirm whether a similar effect can occur in people and whether it makes a meaningful difference to health.