Plastic tea bags are shedding billions of shards of microplastics into their water, according to a new study.
Researchers at McGill University in Canada analyzed the effects of placing four different commercial tea bags into boiling water.
They found that a single bag releases around 11.6 billion microplastic particles, and 3.1 billion even smaller nanoplastic particles, into the cup — thousands of times higher than the amount of plastic previously found in other food and drink.
The health effects of drinking these particles are unknown, according to the researchers
, who called for further study into the area.