Generally speaking children who are not calcium deficient can also be properly supplemented with calcium, especially if they are growing very rapidly and if they have fewer food sources for calcium supplementation, such as children in the adolescent stage or infancy. These two stages of children’s growth and development are particularly rapid, and the demand for calcium is relatively large. This, combined with not drinking enough milk or eating foods with high calcium content, can easily cause calcium deficiency in children. It is important to prevent hypocalcemia in children by giving them timely calcium supplements, such as milk and calcium carbonate pellets.