Question
How is the immune system developing in a four-month-old baby? What common immune indicators should be paid attention to?
Answer
The immune system of a four-month-old baby is gradually developing. At this stage, it’s important to monitor immune indicators such as IGA, IGG, and IGM. The normal range for IGA is typically between 0.7-4.0 mg/dL, while the normal range for IGG is 4.0-11.0 g/L. If the IGA concentration increases from 0.24 mg/dL to 0.46 mg/dL, or the IGG concentration rises from 4.6 g/L to 2.4 g/L, it may be necessary to pay attention. Additionally, regular checks of C3 and C4 complement concentrations are required; normally, C3 should be between 0.76-1.30 g/L, and C4 should be between 0.10-0.40 g/L. For such test results, it is recommended that the mother of the baby consume more protein-rich and vitamin-rich foods in her diet, such as lean meat, fish, eggs, dairy products, fruits, and vegetables, to promote the development of the baby’s immune system. At the same time, if the baby has a sensitivity to beans, strict dietary restrictions should be adhered to, avoiding foods or medications that may trigger hemolytic reactions. For a four-month-old baby, breast milk remains the best source of nutrition. The mother can increase her intake of vitamin- and mineral-rich foods like spinach, tomatoes, oranges, peaches, etc., to enhance the nutritional value of breast milk. Moreover, it is suggested that both the mother and the baby avoid consuming pearl powder, honeysuckle, and chuanlian, which may have adverse effects.