Patient's question:
In three and a half months, his weight is about 19 jin. When he was over 70 days old, he could sit leaning against the sofa. Today, he sat for a while without leaning on anything and didn't fall. He is also very happy when sitting and doesn't sway much. But I worry that he is too young, and sitting might negatively affect the growth and development of his spine. Most of the time when I hold him, he sits on an adult's lap with the adult supporting his waist with their hands. Is this okay for a long time? What kind of assistance is appropriate: Can a four-month-old baby sit?Doctor's answer:
Children usually start sitting up at around 6 months old. Your baby is sitting up at 4 and a half months, which indicates that his nervous system development is quite good. However, timing is important. For example, if a child who is 4 and a half months old is encouraged to sit up early, their spine is not yet fully developed at this stage. Sitting up improperly can cause them to bend, which may also interfere with the growth and development of their spine. Therefore, it is not advisable to teach babies to sit up too early.