comparmentaliser t1_j93ejgh wrote on February 18, 2023 at 11:03 PM

Reply to comment by Bbrhuft in Why does the thyroid use iodine ? by geistererscheinung

Does all life get iodine through other iodine containing organisms? Or do some get it through natural sources, like iodised salt (assuming that it occurs naturally).

It would he interesting it f it’s something that just got perpetually recycled since the dawn of life.

geistererscheinung OP t1_j94pjox wrote on February 19, 2023 at 5:34 AM

I know this answer: It's far more prevalent in the sea than anywhere else, and diminishes in concentration as you move inland. Many inland regions, especially mountainous regions were traditionally so deficient in iodine that many people suffered from extreme deficiency.

https://en.wikipedia.org/wiki/Congenital_iodine_deficiency_syndrome