Old Kitchen Sponges Release Microplastics and Posing Brain Risks!

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Old Kitchen Sponges Release Microplastics and Posing Brain Risks!

Old Kitchen Sponges Release Microplastics and Posing Brain Risks!

Washing dishes is a daily task in most households, and to combat grease, various dishwashing sponges have evolved over time, including the widely used “cleaning sponges.”

While cleaning sponges are affordable and effective, ensuring dishes are spotless, how much do you really know about this daily cleaning aid?

Old Kitchen Sponges Release Microplastics and Posing Brain Risks!

Worn Sponges: A Haven for Microplastics

A recent study published in “Environmental Science & Technology” reveals that worn cleaning sponges release up to 6.5 million microplastic fibers (MPFs) per gram, posing serious health risks.

Due to their poor abrasion resistance, old sponges lose their firmness and become soft, brittle, and prone to holes. Beyond visible damage, worn sponges shed microfibers ranging from 10 to 405 micrometers in length—essentially microplastics.

Researchers tested commonly available melamine sponges and simulated daily dishwashing with rough metal. They found that the sponges lost about 5% of their weight, which likely entered the environment as invisible particles.

Using laser scanning confocal microscopy, it was discovered that each gram of worn sponge produced approximately 6.5 million microplastic fibers. Globally, the use of cleaning sponges has released at least 49 trillion microplastic fibers into the environment!

However, microplastics are not limited to sponges; they can also originate from atmospheric deposition, traffic, wastewater treatment, waste disposal, industrial activities, and household dust.

Invisible Health Threats

What impact do these microplastics have on our health?

Microplastics are difficult to degrade and accumulate in plants and animals, eventually entering our bodies through the food chain. They are so small that they can be inhaled or absorbed through the skin, making them hard to avoid. Microplastic fibers can enter the brain within just two hours and accumulate there.

Scientists have detected microplastic accumulation in nearly all human organs, including the placenta and blood clots. These fibers damage cells and tissues through oxidative stress, cytotoxicity, and inflammation, potentially increasing the risk of pneumonia, kidney damage, and liver disease.

The reproductive system seems particularly affected, with studies suggesting that microplastics can promote epithelial ovarian cancer, cause inflammation in the testes, and decrease sperm quality.

Worn Sponges: A Bacterial Paradise

Similar to old dishcloths, worn sponges pose significant bacterial risks in addition to microplastics. Their porous structure, while effective for cleaning, also retains moisture and debris, creating an environment conducive to bacterial growth.

Food residues, grease, and detergent trapped in sponges provide ample nutrients for bacteria, which can proliferate rapidly in the damp environment.

You might wonder, “Don’t dishwashing detergents kill bacteria?” The answer is no; detergents only remove dirt and cannot eliminate stubborn bacteria. Residual bacteria, including E. coli, Salmonella, and Staphylococcus aureus, can increase the risk of food poisoning if the sponge is infected.

Can Kitchen Sponges Still Be Used?

Yes, but it’s crucial to replace sponges regularly and avoid using those that are heavily worn.

Ideally, opt for more eco-friendly alternatives, such as biodegradable cleaning cloths or natural options like loofah sponges and bamboo brushes. Regardless of the alternative, remember to replace them frequently.