Question: Is a high value of arsenic a concern?
Yes, arsenic is a toxin. You probably don’t want a lot of it, if it's just a little high it might not cause terrible damage.
I would look at methylation if I saw high arsenic, because methylation is needed to get rid of arsenic.
Oh actually I should add that methylation supplements have been shown to help arsenic detoxification in areas of the world where arsenic was a serious concern.
This Q&A can also be found as part of a much longer episode, here: https://chrismasterjohnphd.com/podcast/2019/02/24/ask-anything-nutrition-feb-17-2019/
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