Iron is an important mineral that our body uses for many different functions.  It is required for the production of hemoglobin and myoglobin which help to carry oxygen throughout the body.  It is also critical for the production of many other proteins and enzymes in the body.  The most common deficiency of iron can result in a condition called anemia, which means your blood may not be carrying enough oxygen to the rest of your body.  This can cause fatigue, loss of energy, headaches, dizziness and various other symptoms.