Why do we need iron?

Iron is a mineral that is found in every cell in the body. Iron is used by blood cells to carry oxygen to all cells in the body. Enough iron helps us fight infections because it keeps the immune system healthy and it also helps brain cells work normally. Furthermore, if we are lacking in iron we get tired much more quickly, as our overall endurance is severely compromised. Symptoms of iron deficiency are tiredness, depression, limited attention span, difficulty focusing, hyperactivity, ...