forms over millions of years in the pore spaces of sedimentary rocks from remains of ocean-dwelling phytoplankton; over time it migrates upward toward the highest point in the porous rock because it is less dense than the rock.
Hereditary hemochromatosis (hee-muh-kro-muh-TOE-sus) is a genetic disease that causes the body to absorb and store too much iron. Iron is an important nutrient that our bodies get from food.
When someone has too much iron in their blood, this can also create problems. Iron overload is the accumulation of excess iron in body tissues and can cause a disorder called hemochromatosis. This is unlikely to happen from eating foods rich in iron alone.