Microplastics are everywhere – in our blood, lungs, guts, and even our brains. Researchers estimate we carry about a teaspoon’s worth inside us. What these particles do to our health is still uncertain, but early findings are worrying.
Austrian scientists found that microplastics can alter gut bacteria in ways linked to depression and cancer. “Reducing exposure is a wise precaution,” said Dr Christian Pacher-Deutsch. Other studies show plastic in human brains and arteries, raising the risk of heart disease and dementia.
Still, experts urge caution. “We don’t yet know how harmful they are,” said Prof Stephanie Wright of Imperial College London. Effects may depend on particle size and type, and animal data may not apply directly to humans.
Even so, scientists are changing their habits. “Minimising exposure is likely beneficial,” said Wright. Encouragingly, older people don’t seem to accumulate more plastic, hinting our bodies might clear some over time.
How to Reduce Exposure
- Don’t heat food in plastic; use glass or steel.
- Switch to loose-leaf tea and wooden boards.
- Choose natural fabrics and plastic-free cosmetics.
- Avoid heavy traffic to limit inhaled particles.
We can’t avoid microplastics entirely — but we can limit how much of this hidden pollution gets inside us.
