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American Focus > Blog > Tech and Science > A Single Tea Bag Could Release Billions of Microplastics Into The Body : ScienceAlert
Tech and Science

A Single Tea Bag Could Release Billions of Microplastics Into The Body : ScienceAlert

Last updated: December 26, 2024 9:29 pm
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A Single Tea Bag Could Release Billions of Microplastics Into The Body : ScienceAlert
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Tea Bags Found to Release Billions of Microplastic Particles, Study Shows

It’s no secret that microplastics are everywhere, from human tissue to ancient rocks, and now, a new study has revealed just how many of these tiny particles can be found inside a single tea bag.

Researchers from the Autonomous University of Barcelona (UAB) in Spain conducted a study that found individual tea bags can release billions of micro- and nanoplastic particles in every millimeter of water they come into contact with.

These findings, while surprising, are consistent with previous research on the release of plastics when exposed to high heat, such as in microwave food containers. This highlights the widespread presence of micro- and nanoplastics.

Teabag analysis
The study included and analyzed three different tea bag types. (Banaei et al., Chemosphere, 2024)

Lead microbiologist Alba García-Rodríguez from UAB stated, “We have managed to innovatively characterize these pollutants with a set of cutting-edge techniques, which is a very important tool to advance research on their possible impacts on human health.”

Previous studies have raised concerns about the quantity and potential health impact of synthetic particulates from tea bags, prompting this comprehensive investigation using commercially available tea bags.

The study utilized laser techniques to measure the properties of particles released from different types of tea bags. Results showed that polypropylene tea bags released about 1.2 billion particles per milliliter, cellulose bags released 135 million particles per milliliter, and nylon-6 tea bags released 8.18 million particles per milliliter.

Further analysis revealed that these micro- and nanoplastic particles could interact with human intestinal cells, potentially reaching the cell nucleus. This discovery sheds light on the possible health impacts of these plastics circulating in our bodies.

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Gut cell analysis
Scans showing plastics (in green) entering tissue (blue for the cell nucleus, red for the cell membrane). (Banaei et al., Chemosphere, 2024)

The researchers emphasize the need for standardized regulations on the use of plastics in food packaging to protect public health. Mounting evidence suggests that the presence of micro- and nanoplastics poses risks to ecosystems and human health.

Microplastics and nanoplastics could disrupt normal cell functions and increase susceptibility to infections. Conditions like inflammatory bowel disease (IBD) have been linked to plastics found in the gut.

The research team urges scientific research and policy-making to address the challenges posed by micro- and nanoplastic contamination in food packaging to ensure food safety and consumer well-being.

The study has been published in Chemosphere.

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