What are we really drinking? Hidden dangers in your cup of tea
Photo: the hidden dangers in your cup of tea (Freepik)
We’re used to thinking of tea as a symbol of health, as it soothes, aids digestion, and improves focus.
However, a recent study by scientists at the University of Birmingham, published in the journal Science of the Total Environment, has shocked tea lovers.
The hidden danger in tea
It turns out that an ordinary cup of hot tea can be a source of a hidden threat that most people don’t even suspect. Researchers tested over 150 popular drinks and found that hot tea contains the highest levels of microplastics.
Professor Mohamed Abdalla, who led the study, explained that one liter of tea can contain up to 60 microplastic particles—about 12–15 particles per cup. For comparison, energy drinks and sodas contain almost half as much.
Why this happens
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High temperature: Boiling water accelerates the breakdown of plastic components in packaging.
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Tea bags: Modern pyramid and bagged teas are often made from nylon or bioplastic, which release microplastic particles directly into the hot water.
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Takeaway cups: Paper cups often have a thin plastic lining, adding roughly 22 extra plastic particles per serving.
While the effects of microplastics on humans are still being studied, lab research links them to inflammation, hormonal disruptions, and gut microbiome imbalances.
Tannins in tea
In addition to plastic, tea is rich in tannins. These compounds are beneficial, but they can bind to iron in plant-based foods, preventing its absorption. This is particularly important for vegetarians, vegans, and pregnant women.
How to enjoy tea safely
Experts suggest a few simple habits to reduce risk while still enjoying your favorite drink:
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Choose loose-leaf tea: Avoid bagged tea in favor of loose-leaf brewing. This is the most reliable way to avoid microplastics.
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Use glass or ceramic cups: Avoid paper cups with plastic linings and plastic lids.
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Mind your timing: Don’t drink tea immediately with meals. Wait 30–60 minutes so tannins don’t interfere with nutrient absorption.
This material is for informational purposes only and should not be used for medical diagnosis or self-treatment. Our goal is to provide readers with accurate information about symptoms, causes, and methods of detecting diseases. RBС-Ukraine is not responsible for any diagnoses that readers may make based on materials from the resource. We do not recommend self-treatment and advise consulting a doctor in case of any health concerns.
