The most common foods are animal foods, such as meat, fish, shrimp, animal liver, kidney, egg yolk, seafood such as oysters and shellfish. Some shelled dried fruits and nuts also have a high content, like chestnuts, peanuts and sesame seeds. Generally, if a child is zinc deficient, he or she can eat more zinc-containing foods when supplementing with food. If the zinc deficiency is obvious and the level is particularly low after the trace element test, in addition to food supplementation, it is also necessary to take medicine, because the amount of food supplementation is relatively small. You can supplement with oral liquid or pellets containing zinc, which are more effective.