I don’t have a lot of thoughts on the matter, I know a good bit about PFAS, not microplastics. Grams vs Nanograms is a huge difference, but I don’t know if that’s detrimental or not. Looking over the link you provided the study provides it’s own description of limitations which may or may not be trivial.
How do we feel about having 8g of plastic in our brain. Each of us. https://pdfs.semanticscholar.org/cef0/fd3b2409e2ef92182d9fc42e4308d5fe1b2b.pdf
I don’t have a lot of thoughts on the matter, I know a good bit about PFAS, not microplastics. Grams vs Nanograms is a huge difference, but I don’t know if that’s detrimental or not. Looking over the link you provided the study provides it’s own description of limitations which may or may not be trivial.