Your morning tea may contain 3 billion plastic particles from kettles, researchers warn

The research revealed that the first boil in a new plastic kettle released almost 12 million nanoparticles per milliliter, equating to nearly 3 billion particles per 250ml cup.

Dr. Elvis Okoffo, a member of the research team, explained to News.com.au that plastic release was highest between the first and 50th boils, with the amount decreasing significantly thereafter.

After 150 boils, around 820,000 nanoparticles were still detected per milliliter, or 205 million per cup.

While no established safe limits exist for plastic nanoparticle consumption, the chemicals used in manufacturing the kettles are known to pose health risks. However, understanding the full impact of microplastics on health remains complex.

An electric kettle next to a tea set. Photo from Pexels

"There’s so much going on now to try and understand the particles themselves ... We are not there yet," Okoffo said.

Okoffo stressed that simply rinsing a new kettle is insufficient, recommending that consumers boil and discard the water several times before using the kettle for the first time, or consider investing in stainless steel or metal kettles.

He also called for clearer product labels and instructions, including safety guidelines or warnings about plastic particle release, he told 9News.

He said further research needs to be conducted to better understand the health implications of exposure to plastic nanoparticles.

"The study fills an important knowledge gap about how plastic products used in homes can contribute to daily plastic exposure and how small, practical changes in everyday routines can reduce exposure to plastics," he said.

"By combining better product design, improved labeling, and public awareness, we can help limit the amount of plastic entering both our bodies and the environment."