When you are anemic the red blood cells in your body can not carry enough oxygen from your lungs to other tissues in your body. This happens because there is not enough iron present. Iron is a key nutrient in hemoglobin, which is the part of the red blood cell that carries the oxygen around in the body. Think of hemoglobin as a bus. The bus picks up oxygen from the lungs, drives it around your body and drops oxygen where it's needed.
Body tissues require the use of oxygen to produce energy.
Symptoms of anemia include feeling tired, having headaches and not being able to concentrate. Other symptoms include feeling cold frequently or prolonged healing from a simple cut. The best way to tell if you are anemic is to see your doctor and get a blood test. See your doctor before taking any iron supplements. There can be toxic affects from taking too much iron.