Microplastics are everywhere — in our blood, lungs, guts and even our brains. Scientists estimate the average person carries about 5g of plastic inside them.
Austrian researchers recently found that microplastics can alter gut bacteria in ways linked to depression and cancer. “Reducing exposure where possible is wise,” said Dr Christian Pacher-Deutsch, who led the study.
These particles, shed from packaging, clothes and tyres, are small enough to enter our organs and cells. Dr Jaime Ross from the University of Rhode Island found that mice exposed to microplastics showed brain changes tied to dementia and anxiety.
Plastic has also been detected in human arteries and brains, but experts warn it’s too soon to know the health risks. “We don’t yet know what levels are safe or dangerous,” said Prof Stephanie Wright of Imperial College London.
Still, researchers advise cutting exposure. Avoid heating food in plastic, use glass or steel containers, and pick natural fabrics and loose-leaf tea. “Minimising exposure is likely beneficial,” said Wright.
We can’t avoid microplastics entirely — but small daily choices may help reduce what’s already building up inside us.
