Eating fish means eating mercury in meaningful quanties. The EFSA advocates for that reason against eating tuna every day.

If I buy sea salt, does it also contain mercury? Is so how much? Is it a meaningful quantity such as tuna?

  • Did you do any research into this question by any chance? Could you share what you found? Thanks, and welcome to the site. :-) Sep 4, 2015 at 19:46

1 Answer 1


In general, the answer seems to be no, it does not contain a meaningful quantity. Refer first to this answer in Seasoned Advice.

Although not peer reviewed, this article appears to be a credible source and it's the only documented direct test for mercury in sea salts that I've seen. Refer to Table 3 (Hg is mercury).

  • 2
    I've been looking into this, and I also haven't managed to find another article about quantities of mercury in salt, aside from the one you cited. Their methodology is sound, I can see no apparent conflict of interest as they produce analytical standards (nothing health related) and as someone who's business is in analytics, they should know what they're doing.
    – Lucky
    Sep 12, 2015 at 5:55
  • PDF of the study from archive.
    – Nat
    Oct 1, 2022 at 10:09

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