Feeling tired? No energy? Maybe you are not getting enough iron in your diet! Iron is essential for the formation of haemoglobin in red blood cells; haemoglobin binds oxygen and transports it around the body. Iron also serves as a cofactor to enzymes in oxidation/reduction reactions (i.e., accepts or donates electrons). These reactions are vital to cells’ energy metabolism. Iron requirements fluctuate throughout the life course. Iron needs increase during menstruation, pregnancy, and periods of rapid growth such as early childhood and adolescence.