If a full-term baby is deficient in calcium, it will lead to early calcium deficiency manifestations, mostly seen in the pregnant mother’s calcium deficiency or the baby’s failure to take vitamin D supplements after birth, or repeated diarrhea, etc. It can manifest as strange temper, irritability, grinding disobedience, crying, restless sleep, such as not easy to fall asleep, waking up early at night, crying after waking up, sweating a lot, not related to the climate, even if the weather is not hot, not wearing many clothes, sweating, because of irritability and sweat Stimulation, the baby likes to shake his head and rub the pillow when lying down, and the hair at the back of the head is worn out over time, forming pillow baldness. For severe calcium deficiency, muscle twitching may occur. In addition, teething is delayed, standing and walking time is later than normal, and there are also chicken chest, hunchback, rotund legs, muscle weakness, etc. Calcium deficiency also causes immunity and low resistance, and babies often feel cold, fever and diarrhea. When these conditions occur, you should go to the hospital promptly and have a checkup to rule out if you have hypocalcemia. Do not listen to the exaggerated propaganda of calcium supplements, as more calcium is not better. Milk is the best food for calcium, and adding vinegar when boiling bone broth and bone broth will help calcium absorption. Children need calcium most at night and it is most easily absorbed. The above is for reference only, please refer to the doctor’s face-to-face guidance for specific medication and treatment.