[seuraughty]

People are researching it, there is funding for it [1]. It’s a challenging thing to research.

Is it microplastics or nanoplastics or both?

How many types of plastic are there, half a dozen? What type of plastic do you want to test, what about multiple plastics in different proportions?

It can be difficult to identify mechanisms behind adverse reactions to more obvious stressors, let alone something like this which appears more chronic, long-term, and insidious.

1. https://grants.nih.gov/grants/guide/notice-files/NOT-ES-23-0...

[Filligree]

> How many types of plastic are there, half a dozen?

Several dozen major ones, starting at cellulose.

And before you think I'm missing the point: Well, no, cellulose didn't biodegrade for what IIRC several hundred million years. That's why there's no such coal.

It still barely biodegrades.

[Enginerrrd]

Not to mention, good luck finding adequate controls in humans.

[uoaei]

You would have to do comparative and longitudinal studies. Or at least some kind of factor analysis.