Vitamin D deficient babies generally have: 1, occipital baldness (sleeping pillow hair circle is bald). 2, night terrors (small babies are crying a lot). 3.Sleeping sweating, turning over, boarding quilt, etc. 4, there are some children manifested as bleeding spots after crying, not growing in size, afraid of people, etc. The relationship between vitamin D and calcium: Vitamin D promotes the absorption of calcium, and when it comes to the above symptoms, parents are often the first to think about whether they are deficient in calcium, but often after the trace element test, more than 80% of children are normal, which makes the families confused, whether they are deficient or not. So often, these children are vitamin D deficient. To use an analogy, our baby is a newly built house, calcium is the bricks and vitamin D is the cement. The baby needs bricks and cement to grow. If the bricks are there and the cement is not, it is just as dangerous or even impossible to build a house. As the source of calcium for babies in daily life is relatively rich, milk, meals in enough to meet the needs of the baby, so there is no need to deliberately supplement calcium, which is one of the reasons why calcium through the long does not lack. How to supplement vitamin D? Many parents are now consciously supplementing their children with Iconocin, a combination of vitamin AD, which is a good start. Baby’s infancy is the first growth spurt and needs a lot of vitamin D. Daily life through sunlight, food supplementation is not enough to meet the growth needs, and symptoms will appear. At this time, supplementing vitamin D through sunlight and eating food is not only slow but not enough, so a lot of short time supplementation of vitamin D is needed. The Icocin mentioned above, most of them are 400 units of vitamin D. This dose is This dose is a preventive amount and can be supplemented routinely when there are no symptoms. Once symptoms appear, you can supplement with 800-2000 units per day depending on the severity of the symptoms. Generally, one month is a course of treatment.