[pcl]

According to another comment here, iron deficiency is a common cause of strokes in younger people. Diets low in red meat often lead to iron deficiency. (Of course, this can be addressed with a supplement, but not everyone who avoids red meat also takes iron supplements.)

https://news.ycombinator.com/item?id=14683737

[copperx]

Excess iron in men also elevates cancer incidence, so I don't think one should take an iron supplement if there's no need. A blood test is necessary. If you look closely at the men and women's multivitamins that are sold in stores, you'll see that there is no iron on the men's multivits.

Excess iron can be reduced by donating blood.

Also important: cast iron cookware introduces a non-insignificant amount of iron into cooked food, which can be detrimental (or beneficial) depending on the subject.

[protonfish]

High iron also correlates to an increased risk of heart disease, liver disease, diabetes, and more. http://www.webmd.com/men/features/too-much-iron-in-your-bloo... That's one reason why I donate blood regularly. They check my iron levels, then bleed off a bunch I don't need.