There is iron in cereal. That's good! But it looks pretty gross. Here's how to find it: soak a cup of cereal in a Ziploc bag with water, mix it up and then rub a magnet over the bag. You'll see the metallic iron trailing the magnet. You eat that!
But as you should know, eating iron isn't bad. Breakfast cereals are fortified with iron as a mineral supplement. A diet deficient in iron actually causes fatigue, a weaker immune system and an increased heart rate. Eating this metal is good for you! It's only seeing it in food that makes it gross. You could also say you eat nails for breakfast when you eat a bowl of cereal now. Read more about iron in cereal at Steve Spangler Science. [Steve Spangler Science]