When Iron Becomes Too Much of a Good Thing

Experts warn that once iron builds up in the body, it’s difficult to remove.

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Like other essential minerals with multiple functions, iron is only beneficial within a certain range. While low levels cause iron-deficiency anemia, high levels also threaten health in various ways, some of which are serious.

My friend Martha has iron overload—a condition in which the body stores excess amounts of iron. Consequently, she donates blood regularly, which is the main treatment.