It is the most prevalent nutritional problem in the world, affecting about 2 billion people in developing and developed countries.
Iron deficiency occurs when there is insufficient iron absorbed to meet the body s needs.
Prolonged iron deficiency leads to iron deficiency anemia. Adult males may also be at risk, especially if their dietary intake of iron is very low, or if they have chronic parasitic infections. However, it is best to prevent such severe anemia from developing in the first place. Although the ultimate set of interventions is integrated across multiple sectors, there are basic interventions that can be effectively applied through primary health care.