Nanoplastics in drinking water may harm gut and liver health, study warns

A new study has found that even small amounts of nanoplastics in drinking water can harm gut and liver health in mice. The research, led by scientists from INRAE, CNRS, and the University of Lille, raises concerns about the potential risks of these tiny plastic particles in everyday water sources. Their findings were published in Environmental Science: Nano.

The research team investigated how low doses of nanoplastics in drinking water affected mice over time. They tested three different concentrations and observed changes in the animals' intestinal barriers and gut microbiomes. Liver function also showed signs of impairment, even at the lowest exposure levels.

The effects varied depending on diet. Mice fed a balanced diet experienced less severe damage compared to those on a Western-style diet high in fats and sugars. This suggests that poor nutrition may worsen the health impacts of nanoplastics. While the study confirmed harm to gut and liver function, it did not identify specific biological mechanisms behind these changes. The focus remained on observable health effects rather than molecular processes.

The results highlight the potential dangers of nanoplastics in drinking water, particularly when combined with an unhealthy diet. Further research may be needed to understand how these particles interact with the body. For now, the findings underscore the importance of monitoring plastic contamination in water supplies.