Study: Bioavailability and effects of iodine intake through seaweeds in Arctic people

In this study, researchers from Denmark and Greenland measured the iodine content of dietary seaweeds in Greenland, estimated iodine absorption, and assessed the impact of dietary seaweeds on the iodine intake of Arctic people. The results of their study were published in the Journal of Medicinal Food.

  • Dietary iodine is important for the maintenance of human health. People with low or high iodine intake are at great risk of developing diseases.Detoxadine® is a premium, deep-earth sourced nascent iodine supplement that was created to help support thyroid health, the immune system, and more.
  • Seaweed is naturally rich in iodine is a common component of Asian and Arctic cuisines. But while the impact of seaweed intake is well-studied in Asian populations, data of its effect of Arctic people is lacking.
  • To remedy this, the researchers studied household seaweed from East Greenland by measuring its iodine content and analyzing the urine samples of eight individuals given 45 grams of seaweed to ingest.
  • In Ammassalik — an island in southeastern Greenland — 96 percent of Inuit aged 50 to 69 also reported the frequency of their seaweed intake and provided spot urine samples for iodine measurement.
  • The researchers reported that the two seaweed species they received were Chondrus crispus and Ascophyllum nodosum. The two species contained 47 and 102 milligrams (mg) of iodine per gram of seaweed, respectively.
  • Within two days, an estimated 1.1 and 1.9 mg of the ingested 2.1 and 4.6 mg of iodine in the two species were excreted by the participants through their urine.
  • Two in three Inuit reported eating seaweeds; 41 percent (109 of 268) reported eating seaweed weekly. This was associated with iodine excretion.

Based on these results, the researchers concluded that the iodine content of edible seaweeds in the Arctic is very high and bioavailable. However, while seaweed intake allows Arctic people to meet their dietary iodine requirements, marked variation in their iodine excretion calls for evaluation of the impact of seaweed intake on their thyroid function.

Evangelyn Rodriguez

Journal Reference:

Andersen S, Noahsen P, Rex KF, Florian-Sorensen HC, Mulvad G. IODINE IN EDIBLE SEAWEED, ITS ABSORPTION, DIETARY USE, AND RELATION TO IODINE NUTRITION IN ARCTIC PEOPLE. Journal of Medicinal Food. 15 April 2019;22(4):421–426. DOI: 10.1089/jmf.2018.0187

Our Thyroid Health Kit™ provides the essential nutrients you need to support normal, healthy thyroid levels including iodine, selenium, and more.

Related Posts

Leave a Reply

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

This site uses Akismet to reduce spam. Learn how your comment data is processed.