What's the difference between 37-week and 40-week babies when they grow up?

What's the difference between a baby born at 37 weeks and a baby born at 40 weeks? Answer: childbirth between 37 weeks and 42 weeks of pregnancy is called full-term childbirth. Babies born at 37 weeks and 40 weeks of pregnancy are called full-term babies, but they are not exactly the same. The former has a relatively high risk of developing certain diseases after birth. Babies born between 37 and 38 weeks of pregnancy are called early full-term babies. These babies usually show the corresponding performance of premature infants, and the most common thing is that the respiratory system is difficult to establish. Generally speaking, in the process of fetal intrauterine development, the development of various organs is unbalanced, some organs develop relatively early, some organs develop relatively late, and the lung is the latest organ of fetal development. So theoretically, the development of the baby's lungs at 37 weeks of pregnancy is not very mature. After birth, the process of establishing lung spontaneous breathing will be more difficult and prone to respiratory distress. However, for full-term babies born after 39 weeks of pregnancy, if the mother does not have abnormal conditions such as poor blood sugar control, the probability of respiratory distress is usually low. In addition to respiratory distress, the probability of pathological jaundice, feeding difficulties and infection is relatively high in full-term infants early after birth. It is suggested that if the expectant mother only needs cesarean section because of her mother's pelvic stenosis, it is generally not recommended to have the operation at an earlier time such as 37 weeks or 38 weeks, and it is better to have cesarean section after 39 weeks, so that the fetal organs will usually be fully developed and better adapted to the external state after birth.