Correct, iron accumulation is particularly toxic. In fact it's much worse than a deficiency. The list of diseases caused by long term iron excess is really long and unfortunately very common.

Iron heavy well water and cooking in cast iron pans are some sources of too much iron. Women are mostly protected while menstruating, but menopause can bring on problems for some. Blood donation can get rid of excess iron.

Always have a FULL proper iron panel done for accuracy.