Why does a one-year-old baby nod their head?

Patient's question:

The child nods;;The mental state is quite good;;The child blinks after nodding at adults;;;The child doesn't nod when there are many people;;Nods 1-3 times when playing by themselves1-3 times, what's going on;;;Urgent: Previous treatment history and effectiveness: Doesn't care about any assistance: Please tell me;;Is this severe infant pain

Doctor's answer:

During the growth process, children need calcium and vitamin D. If they haven't been digested before, there may not be enough in their food.
Suggestions: Have the baby checked carefully. If there is indeed a problem, it is necessary to undergo a thorough examination. A CT scan does not interfere with brain development.
The above is the advice for the question "Why does a one-year-old baby love to nod their head?" It is hoped to be helpful to you. Wishing you good health!