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American Focus > Blog > Tech and Science > Microplastics Have a Concerning Effect on The Microbes in Our Gut : ScienceAlert
Tech and Science

Microplastics Have a Concerning Effect on The Microbes in Our Gut : ScienceAlert

Last updated: June 17, 2025 12:15 pm
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Microplastics Have a Concerning Effect on The Microbes in Our Gut : ScienceAlert
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Study Finds Nanoplastics Can Disrupt Gut Health in Mice

We are becoming increasingly aware of the prevalence of microplastics in our environment and the potential risks they pose to our health. A recent study has shed light on how nanoplastics, the smallest type of microplastic, can impact gut integrity and alter gut bacteria composition.

Researchers from the National Cheng Kung University in Taiwan conducted a study where mice were fed polystyrene nanoplastics for 12 weeks. These nanoplastics, at just 100 nanometers in size, had significant effects on the mice’s gut health.

The study revealed changes in protein production, gene activity, bacteria levels, and microRNA coding within cells. Key proteins responsible for maintaining gut barrier function decreased, while the balance of beneficial and harmful gut bacteria was disrupted. Interestingly, a bacteria called Lachnospiraceae was observed to consume some of the nanoplastics, leading to changes in the secretion of extracellular vesicles and a reduction in intestinal mucus production.

Microbiologist Wei-Hsuan Hsu from the National Cheng Kung University emphasized the importance of these findings, stating that plastic particles can interfere with microRNA communication between intestinal cells and gut microbes, potentially harming gut health.

Tissue samples comparing control with nanoplastic exposure
Intestinal mucus in mice with or without nanoplastic treatment. (Hsu et al., Nat. Commun., 2025)

While the study provides valuable insights into the mechanisms through which nanoplastics affect gut health, it is essential to consider the limitations of the research. Mice serve as useful models for studying human health, but further investigation is needed to determine if similar effects occur in humans. Additionally, the mice in the study were exposed to nanoplastics at higher levels than typical human exposure, raising questions about the relevance of these findings to human health.

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Immunologist Yueh-Hsia Luo from the National Central University in Taiwan highlighted the need for continued research to evaluate the long-term health effects of nanoplastics on humans. Despite current challenges in detecting nanoplastics and extrapolating animal study results to humans, the study underscores the importance of understanding the impact of microplastics on our health.

The findings of the study have been published in Nature Communications, prompting further investigation into the potential risks associated with nanoplastic exposure.

TAGGED:effectgutmicrobesmicroplasticsScienceAlert
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