Only for anemic women. Iron is mainly poisonous otherwise, especially for men or people with a history of hemochromatosis (ie British people). That's why multivitamins have separate ones "for women", everyone else just increases their risk of colon cancer.

I think only pre-menopausal women should routinely take iron supplements. Men run the risk of getting to much iron.

Obligatory cereal-iron extraction

https://youtu.be/NHqN-Be5nlU