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Consuming a lot of TMAO is proven to be bad for the heart. Cod contains TMAO in great amounts.

Yet white fish is one of the most recommended heart healthy foods.

You have to be careful when talking about specific mechanisms in terms of Whole Foods. Nutrition can't be reduced down to single mechanisms to provide confident recommendations, and often times results are the opposite of what we would expect mechanistically.




it also has EPA and DHEA, so it's possible those offset the effects of too much iron

also, it's still lower than red meat, it's on the order of white meat

if you want an iron-rich fish you'd have to go up to bluefin tuna, which does have a red tint to its meat




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