January 6, 2025, 4:24 pm | Read time: 3 minutes
Microplastics seem to be becoming an ever-increasing problem for us. They are also found in things that we don’t even think about at first. Researchers found significant concentrations of microplastics in tea bags back in 2019. How should you prepare tea if you want to avoid microplastics?
Microplastics are now an invisible companion in our everyday lives. The particles can also be found in cosmetics, cleaning products, and textiles, as reported by the German Federation for the Environment and Nature Conservation (BUND). But did you know that tea bags can also release billions of tiny plastic particles into the water? According to studies, microplastic contamination from tea consumption can be even higher than from other foods. Below, you can find out why this can be a problem for your health and how you can avoid microplastics when making tea.
Overview
Study Indicates High Levels of Microplastic Contamination in Tea Water
Back in 2019, a study by Canadian researchers showed that microplastics are not only found in cosmetics or plastic products but that tea bags also release a remarkably high amount of micro- and nanoparticles. A single infusion at 95 degrees Celsius released approximately 11.6 billion microplastic particles and 3.1 billion nanoplastic particles into the tea water, amounting to a total of 16 micrograms.
The study shows that even classic paper-look teabags contain small amounts of plastic that serve as material reinforcement or adhesive. Pyramid teabags, on the other hand, are often made entirely of plastic. When brewed, these bags release tiny microplastic particles into the tea water, which can then be absorbed by the body.
“The study notes that the quantity of nylon and polyethylene terephthalate particles emanating from tea bag packaging is significantly higher than levels of plastic contamination detected in other food products by several orders of magnitude. According to the researchers, the increasing presence of micro- and nanoplastics in the environment and food chain is becoming “increasingly worrying.”
How Dangerous Are Microplastics?
The effect of microplastics on the human body is being intensively researched. The Federal Environment Agency warns of the health effects of microplastics on humans. These could have toxic, inflammatory, hormonal, or even DNA-damaging effects. However, there have not yet been enough studies to conclusively assess specific health risks.
Can You Avoid Microplastics When Making Tea?
Öko-Test recommends taking a close look when buying tea bags. Cordless teabags often contain plastic glue, while organic brands usually use plastic-free and biodegradable bags. Two-chamber teabags often contain only a small amount of plastic. You should, therefore, also pay close attention to the material when disposing of tea bags.
It Is Best to Brew Loose Tea
Using loose tea is considered the safest option. This not only avoids microplastics but also reduces packaging waste. A small step that can make a big difference for health and the environment.
However, as you also use a corresponding sieve – also known as a “tea infuser” – with loose tea, you should also pay attention to the material here. Containers made of silicone may contain PFAS (per- and polyfluorinated chemicals), often referred to as ‘forever chemicals,’ which are not biodegradable and can adversely affect health. That’s why metal tea eggs are preferable.

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Avoid Coated Disposable Cups
In addition, it is not only the form of preparation that matters but also the appropriate drinking vessel. Anyone who drinks tea from coated to-go cups, for example, is also ingesting trillions of nanoplastic particles. This cannot happen with a normal ceramic coffee or tea cup. What’s more, plastic cups are disposable products that are not particularly sustainable. For these reasons, it is advisable to choose a traditional teacup.