Why is iron deficiency anemia

summary

Iron deficiency anemia is mainly caused by excessive iron loss or insufficient iron intake in the body, and even needs drug treatment. Let's see why iron deficiency anemia occurs.

Why is iron deficiency anemia

First of all, increased iron demand and insufficient iron intake are more common in infants, adolescents, pregnant and lactating women. Infants and young children need more iron, if they do not supplement eggs, meat and other complementary foods with high iron content, it is easy to cause iron deficiency. Adolescents are prone to iron deficiency. If you can't supplement enough iron in time, women will have more iron deficiency.

Secondly: iron absorption disorder is common after subtotal gastrectomy, gastric acid secretion is insufficient and food quickly enters the jejunum, bypassing the main absorption site of iron (duodenum), so as to reduce iron absorption. In addition, gastrointestinal dysfunction caused by many reasons, such as long-term unexplained diarrhea, chronic enteritis, Crohn's disease, can occur IDA due to iron absorption disorders.

Finally: excessive iron loss, chronic long-term iron loss without correction will cause IDA. Such as: chronic gastrointestinal bleeding (including hemorrhoids, gastroduodenal ulcer, esophageal hiatus hernia, gastrointestinal polyps, gastrointestinal tumors, parasitic infection, esophageal / gastric varices rupture, etc.), menorrhagia (intrauterine contraceptive ring, hysteromyoma and menstrual disorders and other gynecological diseases), hemoptysis and alveolar hemorrhage (pulmonary hemosiderosis, pulmonary hemorrhage nephritis syndrome) The clinical manifestations of the patients were as follows: hemoglobinuria (paroxysmal nocturnal hemoglobinuria, autoimmune hemolysis of cold resistance type, artificial heart valve, marching hemoglobinuria, etc.) and others (hereditary hemorrhagic telangiectasia, chronic renal failure, hemodialysis, multiple blood donation, etc.).

matters needing attention

The time of taking iron is generally determined according to the individual reaction of patients. Generally, it is conducive to the absorption of iron before meals. If it is intolerable, it can be changed to between meals or after meals. Serious need to cooperate with the use of iron, and appropriate supplement of some vitamin C.