There is also the danger of microplastic particles acting as endocrine disruptors. This is a rapidly developing field within (eco)toxicology and is of growing concern among environmental scientists.

https://pubs.acs.org/doi/10.1021/acs.est.6b01441

https://www.sciencedirect.com/science/article/pii/S026974911...

https://www.sciencedirect.com/science/article/pii/S004896971...