Tea bags and the hidden microplastic threat to your brew
A regular cup of tea might hold more than just an aromatic brew. New research conducted by Spanish scientists reveals that popular tea bags can be a significant source of microplastics.
Tea bags are quick, convenient, and available everywhere. They seem like the perfect choice for chilly mornings and relaxation after work. But are they really safe? Scientists from the University of Barcelona decided to investigate what happens to the material of tea bags when in contact with hot water. It turns out that tea bags, under the influence of high temperatures, release large amounts of plastic particles into the brew.
This is how boiling water affects tea bags
Whether you choose black, herbal, green, or fruity tea — the bag can be the source of the problem. Researchers examined different materials used in tea packaging: nylon, polypropylene, and cellulose. In each case, the release of microplastics was observed. Differences appeared only in the number and size of particles.
Moreover, their presence was identified in intestinal epithelial cells, especially those where mucus-producing cells are located. These cells absorbed the most microplastic and nanoplastic, suggesting that the body can easily absorb these contaminants.
Microplastics can attack the whole body
Although the effects of microplastic presence in the body are still being studied, it is already known that it can negatively impact humans - affecting the hormonal, immune, and even reproductive systems. The particles can travel throughout the body and affect cell function, making the tea bag a potential source of danger. If you want to limit exposure to plastic, consider drinking loose leaf tea brewed in a stainless steel infuser.
