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Thread: Mercury Levels in Fish Continue to Rise

  1. #1
    Administrator Islander's Avatar
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    Default Mercury Levels in Fish Continue to Rise

    Beth Levine
    August 18, 2020

    Article Summary:

    • Research shows that mercury levels in some fish are still increasing, despite lower levels in our oceans
    • Overfishing and climate change are the primary causes of high mercury levels in fish
    • Fish can be part of a healthy diet if you carefully choose which ones you consume

    Seafood is an excellent source of protein and omega 3 fatty acids in our diet; nevertheless, it can carry a notable risk to our health. While most of us are aware that mercury levels in certain fish are often elevated, things might be even worse than we thought. Although mercury levels in the oceans appear to be dropping, unfortunately, new research suggests that the same does not hold true for the fish in the ocean. In fact, the levels in certain types of fish have only increased.

    Read more: https://www.jonbarron.org/heavy-meta...ource=hs_email
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    Veteran Member Mr. Wizard's Avatar
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    Default Re: Mercury Levels in Fish Continue to Rise

    Most discussions on "mercury in fish" fail to mention "selenium," which is the mineral balances out mercury. In fact, many ocean-type fish include more selenium than mercury. Mercury binds with selenium, rendering much of the mercury virtually harmless. For example, salmon has about 5 times more selenium than mercury, while albacore tuna has almost 10 times more. It's true that larger fish, like tuna, tend to have more mercury, but they also have lots of selenium. The amount of selenium depends on where the fish are caught. For ex., freshwater fish, like bass, rainbow trout, etc. have varying amounts depending on the content of the region they come from. Local officials can generally tell you the selenium content of local lakes, for example. Bottom line: generally, there's no need to fear mercury toxicity from the more common ocean fish.

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    Moderator Julieanne's Avatar
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    Default Re: Mercury Levels in Fish Continue to Rise

    That's good to know Mr Wiz. I think you mentioned this before, but I had forgotten. A hair analysis several years ago showed a low level of mercury, and recommended selenium. A few years later another analysis showed it almost gone.

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    Administrator Islander's Avatar
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    Default Re: Mercury Levels in Fish Continue to Rise

    Sadly, I had forgotten this too. I'm going to make a Post-it note for my computer to remind me not to fear mercury!
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    Veteran Member grulla's Avatar
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    Default Re: Mercury Levels in Fish Continue to Rise

    We had a somewhat similar discussion just last Feb 2020, where I replied in post #3:
    https://www.hawkeshealth.net/communi...t=mercury+fish

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    Veteran Member Mr. Wizard's Avatar
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    Default Re: Mercury Levels in Fish Continue to Rise

    grulla, thanks for reminding us of this earlier discussion. You have quite the knack for remembering past discussions, and locating older threads to remind us of our earlier comments on specific topics. I never think to look back at old threads, but I appreciate your consistent efforts to do so.

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    Veteran Member grulla's Avatar
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    Default Re: Mercury Levels in Fish Continue to Rise

    Sometimes I have memory recall on certain posts, comments, and threads, but this time I simply used the HH search engine, which is how I found this canned fish thread from last February.
    Last edited by Islander; 2 Weeks Ago at 11:11 AM.

  8. #8
    Veteran Member Mr. Wizard's Avatar
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    Default Re: Mercury Levels in Fish Continue to Rise

    I will post a nice color chart contrasting the selenium/mercury levels for the most commonly consumed fish....once I locate it.

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    Default Re: Mercury Levels in Fish Continue to Rise

    how the ocean level affect the mercury level in fishes?

  10. #10
    Veteran Member Mr. Wizard's Avatar
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    Default Re: Mercury Levels in Fish Continue to Rise

    scilover, studies show it is not the "ocean level" that affects the mercury level in fish, but it's more about the "ocean temperature." Due to climate change, oceans are warmer and warmer water makes fish more active. So, fish eat more to support their increased activity. Eating more increases the amount of mercury they consume, and that's why fish are showing higher mercury levels. But, the research shows that this happened over a 30-year period.

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    Veteran Member Mr. Wizard's Avatar
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    Default Re: Mercury Levels in Fish Continue to Rise

    This link shows that most commonly-eaten fish have "higher" selenium levels than mercury. Again, this reduces the concerns about mercury toxicity from fish. See link: http://net-effects.und.edu/pdfs/Selenium-Mercury.pdf

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