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Thread: Why Tuna Isn't The Fish You Should Be Eating

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    Moderator Julieanne's Avatar
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    Default Why Tuna Isn't The Fish You Should Be Eating

    Bryan Hubbard
    June 3 2019

    Substituting one or two steak meals a week for fish will help you live longer. Eating more fatty fish—and less red and processed meat—reduces your risk of cancer and heart disease.
    The idea is to eat at least 350 grams of fish a week, which is around one-and-a-half cups—and it should be a fatty fish, such as herring or mackerel, or a mix with leaner cuts such as plaice and pollock. But don't make tuna your first choice; it's low in the fatty acids we need, and it can also have high concentrations of methylmercury.



    Read more: https://www.wddty.com/news/2019/06/w...=1559648254833

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    Administrator Islander's Avatar
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    Default Re: Why Tuna Isn't The Fish You Should Be Eating

    I've increased my consumption of fish recently, having access to occasional half-price fillets. But I wonder how much I'm increasing my mercury level at the same time.
    ➤ Happiness is the frosting on the cake of contentment.

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    Veteran Member grulla's Avatar
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    Default Re: Why Tuna Isn't The Fish You Should Be Eating

    I have always heard that the canned tuna comes from smaller fish, as opposed to the tuna steaks one finds in the fresh meat/fish grocery dept. which are larger and therefore older, and that the smaller, hence younger, tuna fish has therefore had less time to absorb appreciable and significant amounts of mercury in it's lifetime.
    Last edited by grulla; 06-05-19 at 05:31 PM.

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    Veteran Member Mr. Wizard's Avatar
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    Default Re: Why Tuna Isn't The Fish You Should Be Eating

    As long as the fish contains more selenium than mercury, the mercury will not harm you. Good news: almost all fish contain more selenium than mercury, except shark, pilot whale, tilefish, swordfish, & king mackerel. Selenium binds the mercury and converts the organic methyl mercury in fish to inorganic, and excretes it. So, if mercury is the only concern, then eat all the tuna and other fish you desire. The selenium will protect you. Just limit your intake of the 5 fish types cited above.

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    Veteran Member grulla's Avatar
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    Default Re: Why Tuna Isn't The Fish You Should Be Eating

    There are a few websites that deal with mercury in seafood, here is one example:
    https://mercuryinfish.org/mercury-guide-for-fish/

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    Veteran Member Mr. Wizard's Avatar
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    Default Re: Why Tuna Isn't The Fish You Should Be Eating

    grulla, thanks for the link. It shows the different levels of mercury by fish type. My research shows that if a fish contains more selenium than mercury, then the danger of mercury toxicity is greatly reduced. Most fish contain more selenium than mercury. Also, a couple of NIH studies found that selenium supplements or eating foods high in selenium is protective against mercury toxicity. Brazil nuts contain more selenium than any other food, but sunflower seeds, pinto & navy beans eggs, and spinach are good sources too. A 3 oz. serving of ham, turkey, beef, and pork contain about 30 micrograms, while a 3 oz. serving of salmon, shrimp, oysters, clams, and crab contain about 45 micrograms. The daily recommended intake for selenium is 55 micrograms.

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    Veteran Member Maurya's Avatar
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    Default Re: Why Tuna Isn't The Fish You Should Be Eating

    For the best explanation of the different types of mercury, and how they are processed within the body, I would recommend the works of Dr Christopher Shade. I won't include links, as it is quite easy just to google his name. The confusion with several types of mercury adds to the obfuscation from many individuals who have an agenda. This leaves aside the vast difference between injected mercury and ingested mercury.

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    Administrator Islander's Avatar
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    Default Re: Why Tuna Isn't The Fish You Should Be Eating

    Thanks for that, Maurya. I don't pretend to always remember the difference.

    And about selenium: it's available as a supplement, but read up first; it's very easy to overdose. Best to stick with food sources which, as you can see, are plentiful.
    ➤ Happiness is the frosting on the cake of contentment.

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