I have hereditary hemochromatosis, as a result my body doesn't correctly metabolize iron. The above is legitimately kind of terrifying for me. I have to manage my iron intake and iron levels, as well as routinely draw blood/give blood in order to prevent going into Iron Overload.

I got lucky and caught it early but Hemochromatosis is the most common genetic disorder among whites effecting roughly 1:300 people. Fortifying iron levels in food staples will likely cause severe damage to people who don't know they have the disorder.