Vitamin A may be involved in absorption of iodine and thyroid hormone!
Updated March 10, 2022
Food & Supplements Program
While this article is about breast cancer, the iodine transport mechanism is the same throughout the body and suggests that vitamin A (retinoic acid) facilitates iodine absorption. While we know that vitamin A is also needed for thyroid processing, that connection is unclear but might be related to this as well.
Retinoic acid induces sodium=iodide symporter gene expression..2000
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