Iodine content of six fish species, Norwegian dairy products and hen's egg

[helvella]

I have an unpleasant feeling that any deviation between the Norwegian Food Composition Table and this paper might be somewhat less than the UK equivalent.

I was somewhat amazed at the huge iodine content of Norwegian pollack!

Whilst it might be necessary to have a simplified system to approximate iodine (and other nutrient) levels, it really needs continual real-world testing and updating. Measuring it, however thoroughly and carefully, then relying on those numbers for ever after is obviously cod science. (Ho, ho!)

Please do NOT take these figures and apply them to any other country (except for comparison) - there could be any number of reasons for the fish, milk and eggs in Norway to have significantly different iodine levels to other countries.

Food Nutr Res. 2018 May 24;62. doi: 10.29219/fnr.v62.1291. eCollection 2018.

Iodine content of six fish species, Norwegian dairy products and hen's egg.

Nerhus I1, Wik Markhus M1, Nilsen BM1, Øyen J1, Maage A1, Ødegård ER1, Midtbø LK1, Frantzen S1, Kögel T1, Graff IE1, Lie Ø1, Dahl L1, Kjellevold M1.

Author information

1 Institute of Marine Research (IMR), Bergen, Norway.

Abstract

Iodine is a trace element required for the production of thyroid hormones, essential for metabolism, growth and brain development, particularly in the first trimester of pregnancy. Milk and lean fish are the main dietary sources of iodine in the Norwegian diet. Thus, the aim of the present study was to provide updated analysed values of iodine concentration in six fish species, 27 selected Norwegian iodine-rich dairy foods and Norwegian hen's eggs. The iodine concentrations in the wild fish species varied between 18 μg/100 g (Atlantic halibut) and 1,210 μg/100 g (pollack). The iodine concentration of cow milk varied between 12 and 19 μg/100 g and the iodine concentration of the eggs varied between 23 and 43 μg/100 g. The results in this study deviate somewhat from the current iodine concentrations in the Norwegian Food Composition Table. This deviation may have a large impact on the assessment of the iodine intake. Hence, updated knowledge about the variation in iodine level of fish, milk, dairy products and hen's egg are of great importance when estimating the iodine intake in the population. These data will contribute substantially to future estimations of dietary iodine intake and will be made available for the public Norwegian Food Composition Table.

KEYWORDS:

ICP-MS; dairy products; fish; food analysis; food composition table; hen’s egg; iodine

PMID: 29853825

PMCID: PMC5971469

DOI: 10.29219/fnr.v62.1291

ncbi.nlm.nih.gov/pubmed/298...

Full paper freely available here:

ncbi.nlm.nih.gov/pmc/articl...

[shaws Administrator]

Thanks for posting and it is amazing how much we're discovering.

[Hidden]

I wonder how all the lava from the Hawaiian volcano that is now running off into the Pacific Ocean is going to change the vitamin/mineral/toxic metal composition of the fish that survive and how our nutritional requirements will continue to be measured and met! Food for thought.

[helvella Administrator Thyroid UK in reply to Hidden]

Do they grow potatoes in Hawaii? If so, perhaps they'll be the only source of totally natural fish and chips?

Volcanic lava, at least when weathered, is widely seen to be a most excellent substrate for growing food plants. That is one of the reasons people cultivate quite to close to known volcanoes like Etna.

Mount Etna is one of the world’s most active volcanoes and is in an almost constant state of activity. The fertile volcanic soils support extensive agriculture, with vineyards and orchards spread across the lower slopes of the mountain and the broad Plain of Catania to the south.

en.wikipedia.org/wiki/Mount...

(Of course, the lava from each volcano varies. There could well be differences between Etna and Hawaii that make for radically different assessments of their effects.)

[Hidden in reply to helvella]

Very interesting. I was more focused on the current devastation but, thinking about it from your info, maybe it's the Universe's way of ultimately helping the planet improve it's soil. (I don't think it can get any worse right now.) I don't think they grow potatos there LOL-so no organic fish and chips-but they have lots of macadamia nuts, coffee, and pineapples! Probably there are still lots of good minerals and nutrients deep inside the earth that humans haven't been able to deplete yet! Every cloud has a silver lining.😊