Can microplastics in milk and dairy products reach your body?
Yes. A 2026 review found microplastics reported in milk and dairy products, with possible routes from farm exposure, processing, transport, and packaging.
What is in the research
Microplastics are tiny plastic particles. A dairy product can pick them up before it reaches your fridge. The source can include the farm environment, animal feed and water, processing equipment, transport, and packaging.
This does not mean every carton has the same amount. The review found that study methods vary, so the exact numbers are still hard to compare.
What the research says
A 2026 review in J Hazard Mater looked at microplastic research on milk and dairy products. The authors found reported contamination from raw milk to milk powder, with milk powder showing the highest levels in the studies they reviewed.
The review also described a route that starts before packaging: dairy cattle can take in microplastics through water, feed, air, and skin contact. Those particles can reach the mammary gland through blood circulation and then be secreted into milk.
That finding matters because packaging is not the only issue. Still, reducing plastic food contact at home is one part you can control.
Safer next steps
Choose dairy in glass when it is easy to find. Store opened cheese, yogurt, and leftovers in glass instead of plastic wrap or plastic tubs. Do not heat dairy foods in plastic containers.
The research at a glance
| Study | Journal | Year |
|---|---|---|
| Microplastic in milk and dairy products: Research quality, abundance, sources, and transfer mechanisms. | J Hazard Mater | 2026 |