Iron deficiency anemia in children commonly occurs due to: insufficient iron intake; excessive iron loss due to certain diseases; or impaired digestion and absorption of iron due to certain diseases. After these diseases are cured, together with the supplementation of iron-containing foods and the treatment of iron supplements, iron deficiency anemia is cured. How to prevent physiological iron deficiency anemia? 1. First of all, we should pay attention to the different amount of iron contained in different foods and the different digestion and absorption processes in human body, if we do not pay attention to these, it will cause insufficient intake of iron in food. In our daily life, the classification of iron-containing food is the same as our usual classification, meat and vegetarian food. The iron contained in non-vegetarian food is heme iron, which is not disturbed by other foods in its digestion and absorption process. The iron contained in vegetarian food is non-heme iron, which can be interfered by other components in food (plant fiber, phosphoric acid, oxalic acid, etc.) during its digestion and absorption, and affect the digestion and absorption of iron. Therefore, if you want to supplement iron and prevent iron deficiency anemia, meat is the best food. So what are the most suitable non-vegetarian foods for iron supplementation? The answer is: egg yolk, red meat (lean meat of pork and beef), chicken and duck blood, and pig liver. In particular, beef meat, chicken and duck blood, pig liver contains a lot of iron. Some vegetarian foods are high in iron, such as black fungus, sesame paste, cinnamon, soybeans, are also our daily iron supplementation foods, but they contain non-heme iron, which is easily affected by other ingredients in the food during the digestion and absorption process in the body, and reduces the absorption. Therefore, when we ingest these foods to supplement iron, try to avoid eating with some foods, such as foods high in plant fiber, as well as tea, coffee, and not even with milk. 2, Secondly, in different ages, different states of children, their growth and development stages are different, their iron intake start time, intake is different, another dietary preferences, will affect the intake of food iron. If you do not pay attention to these situations, iron deficiency anemia may occur. In infancy. Infants born at full term with normal birth weight may develop mild iron deficiency anemia after 4 months of life, when the iron stored from the mother is gradually used up in the late fetal period, if they are still exclusively breastfed and the iron in breast milk is insufficient, starting at this time, if no attention is paid to iron intake, in 6~7 months or after 6~7 months. Therefore, for these infants, if conditions allow, it is recommended to start adding complementary foods after 4 months of life, paying attention to adding complementary foods rich in iron and easily absorbed by iron. It is generally recommended that after 4 months of age, when starting to add iron-containing complementary foods, egg yolk should be added first, and after 6 months, minced meat made from lean pork should be added. If the infant is premature, fails to look forward to after the mother’s pregnancy, or is a twin, multiple birth, at the time of birth, the body stores less iron, such as exclusive breastfeeding, the infant may develop a more severe iron deficiency anemia after 6 to 7 months or 6 to 7 months. Therefore for these infants it is recommended that iron supplementation may be started after 2 months of life. During adolescence. Children’s body development increases faster and their iron needs increase, so when parents do not pay attention to the obvious increase of children’s iron needs during this period and do not pay attention to more intake of iron-containing foods, iron deficiency anemia sometimes occurs. When individual adolescents (especially girls) are developing, they think about slimness and worry about gaining more weight, and deliberately reduce their dietary intake, resulting in iron deficiency anemia. Another reason for iron deficiency anemia in adolescence is that children grow up with partial diet, but in adolescence, iron needs increase, and at this time, they still have partial diet, resulting in insufficient iron intake. When adolescent girls have their menstrual periods, individual girls with high volume and short intervals, but without deliberately thinking of supplementing more iron-rich foods at this time, may also develop iron-deficiency anemia.