Iodine - Change History

Fact Sheet for Consumers

May 1, 2024

View change — Added a new section on low iodine diets for radioactive iodine treatment to the “What are some effects of iodine on health?” section.

July 28, 2022

Revised the "What foods provide iodine?" section to add eggs as another good source.

March 22, 2021

Linked to the new edition of the Dietary Guidelines for Americans and updated the associated text.

September 18, 2020

Revised text in the “What foods provide iodine” section, and added text about vegans in the “Am I getting enough iodine?” section.

May 1, 2020

Updated the fetal and infant development section to include recommendations from the American Thyroid Association and the American Academy of Pediatrics.

March 31, 2020

Replaced the term “mental retardation” with “intellectual disability” in the What happens if I don’t get enough iodine? section.

December 6, 2019

Changed text to clarify that the upper limits are "daily" amounts.