Iron deficiency is a reduction of the amount of iron in the body. The iron introduced with food represents only a small part of the iron that our body uses, the remainder comes from the degradation of red blood cells (cells that transport iron to the tissues).
Iron in the body is always linked to specific proteins that are used to store it (ferritin) and to transport it (transferrin, lactoferrin).
The menstrual cycle
The period of childhood
anorexia or bulimia
Crohn’s disease, ulcerative colitis, heart failure, renal failure, rheumatoid arthritis, obesity, various forms of cancer and related chemotherapy