On one of the X-Men movies (which sucked, by the way), the character Magneto removed an amount of iron that amounted to the size of a tennis ball from someone's body. Apparently, one of Magneto's henchmen had injected the guy with iron beforehand. I'm curious about how realistic this is. Could someone survive or not show any signs of health problems with that much iron in their body, especially if most of it was injected all at once? Approximately how much iron do adults have in their bodies, specifically, the average 40 year-old guy on a typical American diet? Would an injection like that do more harm than good to an iron-deficient adult?