Die chronische Exposition gegenüber Mikroplastik beeinträchtigt die Blut-Hirn-Schranke, induziert oxidativen Stress im Gehirn und schädigt Neuronen, findet eine neue Studie an Ratten. Diese Partikel sind jetzt in Ozeanen, Flüssen, Boden und sogar in der Luft weit verbreitet, was es schwer zu vermeiden macht.

I’ve linked to the news release in the post above. In this comment, for those interested, here’s the link to the peer reviewed journal article:

https://link.springer.com/article/10.1007/s12035-025-05157-0

From the linked article:

**Chronic exposure to microplastics impairs blood-brain barrier and damages neurons**

**A study on rats suggests that exposure to microplastics may impair the blood–brain barrier, induce oxidative stress in the brain, and damage neurons**. The microplastic exposure involved oral administration of low-density polyethylene (LDPE) suspended in water for 3 and 6 weeks. The research was published in Molecular Neurobiology.

Microplastics are tiny plastic particles, typically less than 5 millimeters in size, that originate from the breakdown of larger plastic waste or are intentionally manufactured for use in products such as cosmetics and industrial abrasives. **These particles are now widespread in oceans, rivers, soil, and even the air, making them difficult to avoid.**