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Report: High levels of toxic chemicals found in Apple, Google, Samsung, and more smartwatch bands
(www.phonearena.com)
This is a most excellent place for technology news and articles.
Missing from the article: actual amounts of PFAS found in the bands, what percentage of it can be absorbed through skin contact, how that compares to other sources the average person might run into, and how much you have to absorb before biological damage emerges out of the statistical noise. The information may be in the original paper, but I'm disinclined to search for it there. Without those numbers, this is meaningless.
From the paper:
So it sounds more like it’s unclear for now. But probably best to about these bands either way.
"Very high"