1, loss of appetite: picky eaters, anorexia, refusal to eat, generally reduced food intake, no hunger, no initiative to eat;

2, eating strange things. For example: biting nails, clothes, eating toys, hard objects, eating hair, scraps of paper, uncooked rice, wall ash, mud, sand and so on;

3. Growth and development are slow, the height is 3-6 cm lower than that of the same age group, and the weight is 2-3 kg lighter;

4, low immunity, frequent colds and fever, repeated respiratory infections such as tonsillitis, bronchitis, pneumonia, sweating, night sweats, etc.;

5. hyperactivity, slow reaction, inattention and poor learning ability;

6, vision problems: decreased vision, easy to lead to night vision difficulties, myopia, hyperopia, astigmatism and so on.

Extended data:

Dietary zinc supplement skills:

1, zinc mainly exists in marine products, animal offal, meat and other animals, and food in protein, such as the "king of zinc" must belong to oysters. According to laboratory tests, animal foods generally contain more zinc, about 3-5 mg of zinc per 100 grams of animal foods, and the amino acids produced after the decomposition of animal protein can also promote the absorption of zinc.

2. However, there is less zinc in plant food, and zinc 1 mg is contained in every 100 grams of plant food. There are beans, peanuts, millet, radish and Chinese cabbage with high zinc content in various plant foods. It is almost impossible to find zinc in fruits and vegetables, water, plant protein, cereals and eggs.

References:

People's Network-What are the manifestations of zinc deficiency? How to supplement zinc correctly?