Given that we can now assume that we're all consuming microplastics, and that we all have loads of the stuff floating around in our own bodies, the next question is So What?
As in, do we know what effects this has? Are we worried because we know it's harmful, or because we're assuming that it will be but we haven't figured out how yet, or are we worried because we simply don't know and past experience has given us reason to anticipate some negative long-term effect?
Is there any chance that it might turn out to be unimportant, that these plastics are mostly inert, or that our immune systems are able to neutralise or expel them over time? Or is it more likely that we're screwed?