It's been over three years since scientists first found microplastics swimming in four different human placentas, and as it turns out, that was just the tip of the iceberg.
That’s just a few things from a search. There aren’t assumptions here. And your mention of metal is interesting given that so many of them have adverse health effects for people. No need to wait to see how it pans out, there’s already the conclusion that they’re horrible and there is a specific understanding about why they are horrible.
Hey look, here’s an article from 2020 about micro plastics being a carcinogen https://www.sciencedirect.com/science/article/abs/pii/S0304389420309833
Here’s another that goes over individual chemicals that may leech out of them https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7068600/
That’s just a few things from a search. There aren’t assumptions here. And your mention of metal is interesting given that so many of them have adverse health effects for people. No need to wait to see how it pans out, there’s already the conclusion that they’re horrible and there is a specific understanding about why they are horrible.