Children who eat zinc deficiency will lose their appetite, their resistance will decrease, their hair will become thinner and yellow, they will often catch a cold, their taste will decrease, and in severe cases, pica and brain nerve development disorders will occur. Calcium deficiency will affect the development of bones and teeth, leading to slow growth and late teething. I often sweat and get upset, especially when I sleep at night. Some people have baldness and beaded ribs. In the worst case, there will be O-legs or X-legs. Therefore, it is necessary to pay attention to children's comprehensive nutrition. When they find symptoms of discomfort, they should seek medical advice in time.