Originally Posted by Cloudbase
You can control how much iron you ingest through diet.
Your body will not remove the iron from your system by itself though. The only way to reduce your level of iron is by loosing blood. That is one of the major reasons that men and women have different vitamins - women loose iron during menstruation so they need to include it in their vitamins. Men don't bleed regularly so we don't need to ingest it.
You lose iron when you sweat, actually. That's where some folks develop exercise induced anemia. So the idea that their iron levels suddenly spike when they increase their exercise during the season is counterintuitive.
If we didn't (men that is) lose iron other than bleeding, we'd have to never eat anything with iron it, because when your iron content reaches a certain level it becomes toxic.