What is anemia in children?
Anemia means a child has a lower than normal number of red blood cells. These cells have hemoglobin, which is an iron-containing molecule that carries oxygen around the body. In general, the number of red blood cells may be lower than normal for one of three reasons: because not enough red blood cells are being made in the bone marrow, they are being lost somewhere due to bleeding, or they are being destroyed for other reasons.
Anemia is a common condition that affects many children. A lack of iron in the diet is the most common cause of anemia in infants and toddlers. Iron is needed to make red blood cells, so without enough iron, the body cannot make enough of them. A lack of the vitamins B12 and folic acid also reduces how many red blood cells are made, leading to anemia. Other less common causes of reduced production include certain medications, viral infections, rare blood diseases, metabolic diseases, and other chronic childhood illnesses.
In older children and adults, anemia more commonly results from chronic blood loss, for example, due to repeated nose bleeds, heavy menstrual periods, or intestinal bleeding (such as seen with inflammatory bowel disease).
Some inherited conditions can cause anemia due to increased destruction of blood cells. Sickle cell disease, which is widespread among African-American children, is a hereditary disease that often results in anemia. Thalassemia and G6PD deficiency are other hereditary disorders that can lead to anemia by causing red blood cells to be destroyed.



