Final answer:
Iron deficiency anemia can be caused by poor nutrition or blood loss.
Step-by-step explanation:
Iron deficiency anemia can be caused by poor nutrition or blood loss. Iron deficiency anemia occurs when the amount of available iron is insufficient to allow production of sufficient heme.
This condition can occur in individuals with a deficiency of iron in the diet, including vegans and vegetarians, as well as in individuals who experience slow, chronic bleeding.