Microparticles Released from Teabags can be Harmful
A researcher at Northwestern Sakarya University in Turkey found about 13,000 microplastic particles from a single teabag passing into the water. In her research, Meral Yurtsever said microplastics were found in four of 11 cup bags and in all 11 teapot bags of different brands. She further recommended using loose tea instead of teabags and added that "It would be better for the consumer to turn to products that do not actually contain much packaging. We can prefer bulk teas."
A previous study from the Netherlands shared its results in March 2022, as it indicated that microplastics were found in human blood for the first time. In the study, PET (polyethylene terephthalate) plastic widely used in beverage bottles, food packaging, and clothing production, polystyrene used in packaging food and household products, and polyethylene used in a plastic bag were detected in blood samples.
In 2019, a team of researchers at mcGill University in Canada found that a single plastic teabag at brewing temperature released about 11.6 billion microplastic and 3.1 billion nanoplastic particles into the water. These levels were thousands of times higher than those reported previously in other foods. Fleas exposed to plastic microparticles demonstrate anatomical and behavioral abnormalities.
According to Rachel Adams, a senior lecturer in Biomedical Science at Cardiff Metropolitan University, ingesting microplastics could cause a number of potentially harmful effects, such as:
- Inflammation: when inflammation occurs, the body's white blood cells and the substances they produce protect us from infection. This normally protective immune system can cause damage to tissues.
- An immune response to anything recognised as 'foreign' to the body: immune responses such as these can cause damage to the body.
- Becoming carriers for other toxins that enter the body: microplastics generally repel water and will bind to toxins that don't dissolve, so microplastics can bind to compounds containing toxic metals such as mercury, and organic pollutants such as some pesticides and chemicals called dioxins, which are known to causes cancer, as well as reproductive and developmental problems. If these microplastics enter the body, toxins can accumulate in fatty tissues.
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