Plastics are affecting our environment and possibly even our health in troubling ways – and the tiniest pieces have now been linked to changes in brain proteins associated with certain types of dementia, including Parkinson's disease.

This study discusses evidence anionic nanoplastic contaminants promote α-synuclein aggregation, observed in diseases like Parkinson’s. However, these are early findings, and there haven’t been studies done in humans yet.

https://www.science.org/doi/10.1126/sciadv.adi8716 (open access)