Question
A three-and-a-half-month-old baby is unable to support their head steadily, can only briefly lift it for a few seconds, and prefers to suck their fingers while lying on their stomach rather than lifting their head. What might be the cause of this situation?
Answer
According to normal growth and development, most babies should be able to lift their heads by three months of age. Based on your description, the baby does have the ability to lift their head, but the duration is short, which may be related to individual body differences or a deficiency in vitamin D. It is recommended to increase outdoor activities, allowing the baby more exposure to sunlight, and maintaining normal feeding habits, while continuing to supplement vitamin D. Vitamin D helps promote the absorption and utilization of calcium in the baby’s body.