You could be overdosing on iron without even knowing it, which can cause lethal damage to your heart and liver.
While it's fairly common for people in the U.S. to be afraid of the number thirteen, for some, the number four is a lot scarier.
Iron is necessary to maintaining a healthy body, but did you know too much can actually be dangerous?
True or false:we are now in the midst of a heart-failure epidemic? Find out on this Moment of Science.