Iron is a vital element involved in the transport of oxygen. An iron deficiency limits the delivery of oxygen to cells, resulting in fatigue, slower metabolic functions, and reduced immunity. About 70% of the iron in the body is found in hemoglobin, the protein in red blood cells that carries oxygen to the tissues.

The body cannot synthesize iron. It must therefore be taken from food every day. Nature is well done: iron's absorption rate varies according to the state of the body's reserves (ferritin). This defense system makes it possible to avoid the toxic effects of an excess, but also to combat deficiency. Non-heme iron (which is not associated with hemoglobin) is involved in many metabolic reactions. It is necessary for hormonal health, energy production or cognitive development for childrens.