The occurrence time of physiological anemia in children

Patient's question:

I have been experiencing dizziness recently, and I can't seem to eat properly either. My mental state isn't great either. When I went to the hospital for a check-up, they said it's a blood-related issue. Could you please tell me when physiological anemia in children typically occurs?

Doctor's answer:

The time of recurrence of physiological anemia in infants is between 2 to 3 months after birth. Physiological anemia in infants is not due to a lack of erythropoietin or abnormal bone marrow function; it is a normal physiological phenomenon. The main reason is that after birth, pulmonary respiration is established, leading to a geometric increase in blood oxygen saturation, which significantly increases erythropoietin levels and enhances bone marrow function. Physiological anemia is self-limiting and does not require treatment. After three months, red blood cells and hemoglobin will gradually increase. It is recommended to have the child undergo periodic blood tests for follow-up.

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