Can microplastics from food packaging and tap water damage your kidneys?

What's actually in it

Microplastics are everywhere in the food and water supply: in tap water, bottled water, sea salt, seafood, and packaged foods. The kidneys filter blood, and anything small enough gets processed through them.

Microplastic particles smaller than a few microns can pass through the gut lining into the bloodstream. From there, they circulate to the kidneys. Research using tissue samples has confirmed microplastics in human kidney tissue.

What the research says

A 2026 review on microplastics and renal health found that microplastic exposure triggers oxidative stress and inflammatory responses in kidney cells. The review found evidence of structural damage in kidney tissue with microplastic accumulation, and noted that people with pre-existing kidney conditions may be more vulnerable.

Microplastics also act as carriers for other chemicals, bringing accumulated pesticides, heavy metals, and plasticizers along with them into tissue. The kidney burden isn't just the particles themselves.

Reducing microplastic exposure means filtering tap water (reverse osmosis removes the most), storing food in glass rather than plastic, and avoiding single-use plastics for food and drink.