If a child is found to have a zinc deficiency, which manifests itself in irritability, poor development, poor eating, poor thinking, and poor concentration, he or she needs to be seen by a pediatrician and given a zinc supplement when they are infants. If the child can eat, or a little older teenagers can eat more lean meat, seafood, nuts, which contains a higher amount of zinc. As long as the usual attention to diet, eat more lean meat, seafood, vegetables, the body’s trace elements can be balanced, do not need additional supplementation. If you do find that your baby has a zinc deficiency, irritability and weakness rather than rickets, you need to give him meat juice, vegetable juice, which contains higher zinc. Nowadays, children’s health care and growth and development are gradually emphasized, you can check the trace elements.