1. vitamin A deficiency

Performance: vitamin A deficiency can cause visual impairment, even mild vitamin A deficiency can also affect the immune function of children, reduce the anti infection of children, and lead to higher incidence and mortality of respiratory and digestive tract infections. Vitamin A deficiency can also lead to child growth retardation and bone and soft tissue growth, causing dry eye disease, night blindness and other symptomsThis wasnot adecisionthat Itook lightly. .

2. zinc deficiency

Performance: low appetite is one of the early manifestations of zinc deficiency in infants. Children with zinc deficiency have a diminished taste, sour, sweet, bitter and salty; growth retardation, short stature, weight loss, poor resistance, recurrent colds or diarrhea; recurrent oral ulcers; zinc deficiency can also damage the taste buds of children and appear anorexia.

3. iron deficiency

Performance: iron deficiency anemia affects the health of women of childbearing age and children very seriously. Severe iron deficiency anemia can increase the mortality rate of children and mothers. Iron deficiency can damage the mental development of children, make infants easily excited and indifferent, lack interest in the surrounding things, and can also cause attention, learning ability and memory abnormality for children and adolescents. The incidence of lead poisoning in children with iron deficiency is 3-4 times higher than that in children without iron deficiency.

4. symptoms of calcium deficiency

Performance: calcium is one of the most vulnerable nutrients in children's diets. Long - term feeding of fast growing infants with low calcium intake with vitamin D deficiency and less sun exposure can lead to growth retardation, bone malformation and dysplasia of the teeth.

5. iodine deficiency

Performance: iodine deficiency can lead to a decrease in thyroid hormone secretion. Children can be characterized by physical retardation, mental retardation, and severe mental retardation.

Photograph: Children's photography (with Akimoto has nothing to do with this content)

In 1990, the international authoritative medical institutions redefined the scope of "trace elements" and divided them into three categories according to their biological functions.

There are 8 essential trace elements in human body, including iodine, zinc, selenium, copper, molybdenum, chromium, cobalt and iron.

There are 5 essential elements of human body, including manganese, silicon, boron, vanadium and nickel.

Potentially toxic, but at low doses, there may be 7 essential elements, including fluorine, lead, cadmium, mercury, arsenic, aluminum and tin.

In fact, in daily life, parents do not need to be particularly entangled in the examination of trace elements, and do not deliberately focus on the lack of supplemental or relatively small amounts of trace elements. In fact, it is unscientific to give children trace elements. As long as the child has no metabolic disorder, no gastrointestinal disease, no partial food and chronic consumptive disease, eat well, balance nutrition, do not need to make up, and the body will not lack trace elements.