You’re Probably Breathing in Thousands of Microplastics—Every Day

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We already knew microplastics were in the oceans, in our food, and even in our blood. But new research suggests we may also be inhaling far more of them than anyone expected—especially indoors.

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A team of French scientists says people could be breathing in 100 times more microplastic particles than previous estimates suggested. Their study, just published in PLOS One, found that both homes and cars are hotspots for these nearly invisible invaders.

Most past research looked at larger microplastics—around the size of a grain of sand. This team focused on ultrafine particles, 10 micrometers or smaller, which are small enough to lodge deep in your lungs. Once there, they can trigger inflammation, stress responses, and even impact your immune system.

🚗 Your Car Might Be Worse Than Your Living Room

To get real-world data, the researchers collected air samples from their own apartments and cars—yes, while actually driving. Using a technique called Raman spectroscopy, they found:

• About 528 particles per cubic meter in apartment air

• A shocking 2,238 particles per cubic meter in cars

• Over 94% of those particles were smaller than 10 micrometers

The researchers estimate that adults are inhaling roughly 3,200 microplastic particles per day.

🧠 Big Picture: An Invisible Threat

This study adds to growing concerns about how everyday exposure to microplastics may impact long-term health. And while more research is needed to fully understand the risks, one thing is clear: our modern environments are teeming with microscopic plastic—and our lungs are taking the hit.

📝Microplastics aren’t just in the ocean—they’re in the air you’re breathing right now, especially indoors. New research shows we’re likely inhaling thousands of invisible particles each day, and they may be impacting our health more than we realize.