August 17, 2023
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Revised the “What are some effects of iron on health” to clarify recommendations for iron supplementation during pregnancy.
April 5, 2022
Revised the “Can iron be harmful?” section to add information about more serious gastrointestinal effects of taking large amounts of iron.
March 22, 2021
Linked to the new edition of the Dietary Guidelines for Americans and updated the associated text.
December 10, 2019
Changed text to clarify that the upper limits are "daily" amounts.
September 4, 2019
Revised text in the section titled What happens if I don’t get enough iron?
July 11, 2019
Updated the link to USDA’s FoodData Central.
