Are microplastics causing pregnancy growth restriction?

What's actually in it

We are constantly exposed to nanoplastics, which are tiny plastic particles smaller than a human cell. These particles are not just sitting in our environment. They enter the bloodstream and can travel to the placenta, the organ that feeds a growing baby.

Once they reach the placenta, these particles can interfere with the delicate biological signals required for healthy development. Specifically, they disrupt the GATA2 protein, which is essential for building the blood vessels that supply the fetus with oxygen and nutrients.

What the research says

A 2026 study in PLoS Biol found that oligomeric lactic acid nanoplastics directly cause intrauterine growth restriction in mice. By blocking the development of placental blood vessels, these plastics prevent the fetus from getting what it needs to grow properly.

This is not the only risk. Another 2025 study in Sci Adv shows that when microplastics enter the bloodstream, they can cause cell blockages. This process can lead to cerebral thrombosis (blood clots in the brain) and serious neurobehavioral issues.

This peer-reviewed research confirms that these materials are not inert. They actively interfere with the body's ability to support a healthy pregnancy.