Can microplastics in your body trigger kidney stones?
Yes. Nanoplastics worsen calcium oxalate crystal formation in kidneys, amplifying the process that leads to kidney stones.
What's actually in it
Nanoplastics from food packaging, bottled water, and household dust enter your bloodstream and get filtered by your kidneys. Your kidneys concentrate waste products and minerals into urine. When nanoplastics are present, they interact with the minerals that form kidney stones, especially calcium oxalate.
Kidney stones affect about 1 in 10 people. The condition is becoming more common, and environmental factors may be contributing.
What the research says
A 2026 study in Part Fibre Toxicol found that polystyrene nanoplastics amplify calcium oxalate crystal formation in kidney tissue. The nanoplastics acted as a seed that calcium oxalate crystals grew on, speeding up the stone formation process.
The combination of nanoplastics and calcium oxalate crystals also caused more tissue damage than crystals alone. The plastic particles triggered additional inflammation that worsened the injury to kidney cells.
Staying hydrated helps flush both microplastics and stone-forming minerals from your kidneys. Reducing plastic food and water contact lowers the amount of nanoplastics reaching your kidneys in the first place.
The research at a glance
| Study | Journal | Year |
|---|---|---|
| Supplemental exposure to polystyrene nanoplastics synergistically amplifies calcium oxalate crystal-induced renal injury. | Part Fibre Toxicol | 2026 |
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