Are there any benefits of having a high iron concentration in the blood?

Not particularly. If you mean upper limit of normal as far as iron levels go, then you may be fine. High levels of iron in the blood can be damaging to many organs of the body. Hemachromatosis is a condition of large iron stores in the body. It is genetic. Sexual function, liver damage, severe arthritis, diabetes, heart failure and arrhythmia, thyroid disorder and many other conditions come from this. Get exam.