Can a baby who is more than 5 months old practice sitting? Are there any disadvantages?

Patient's question:

Can a baby who is more than 5 months old practice sitting? Are there any disadvantages, and is it necessary to practice?

Doctor's answer:

Do not teach babies to sit and stand too early
Teaching babies to sit and stand too early is extremely harmful to their healthy growth. The organic matter in children's bones is relatively high, while the inorganic salt content is relatively low, making their bones softer and more elastic, which makes them prone to deformation. Learning to walk too early is not only easy to cause bending deformities in the lower limbs of infants but also makes the elbows, which are often pulled by parents, very prone to "humeral head subluxation." Parents always believe that early exercise in sitting, standing, and walking can prevent the occurrence of vitamin D deficiency rickets. In fact, it is the opposite. Children with rickets, due to osteoporosis, are very likely to develop bone bending deformities once they bear excessive weight, so children with vitamin D deficiency rickets should be even more reluctant to force them to sit or stand too much.