1, anorexia: picky eaters, anorexia, refusing to eat, generally eating less, children are not hungry, do not take the initiative to eat;
2. Eat strange things. For example: biting nails, clothes, eating toys, hard objects, eating hair, scraps of paper, raw rice, wall ash, mud, sand, etc.
3. Slow growth and development, 3-6 cm lower in height and 2-3 kg lighter in weight than the same age group;
4, low immunity, frequent colds and fever, repeated respiratory infections such as tonsillitis, bronchitis, pneumonia, hyperhidrosis, night sweats, etc. ;
5. White spots appear on nails, and finger barbs appear on map tongue (irregular red and white patterns on tongue surface);
6. hyperactivity, slow reaction, inattention and poor learning ability;
7, vision problems: decreased vision, easy to lead to night vision difficulties, myopia, hyperopia, astigmatism and so on. ;
8, skin damage: when trauma occurs, the wound is not easy to heal; Susceptible to dermatitis and intractable eczema;
9. Adolescent sexual retardation, such as: male genitalia testicles and penis are too small, testosterone content is low, and sexual function is low; Female breast development and menstrual cramps are late; Both male and female pubic hair appeared late;
10, recurrent oral ulcer.
Extended data:
Common sense of correct zinc supplementation:
1, eat more foods containing zinc.
Zinc mainly exists in marine products, animal viscera, meat and other animals, as well as food in protein. Like the "king of zinc", it belongs to oysters. According to laboratory tests, the zinc content in animal foods is generally high, and the zinc content in each100g of animal foods is about 3-5mg, and amino acids produced after animal protein decomposition can also promote the absorption of zinc.
However, the zinc content in plant food is less, and the zinc content in plant food per 1 00g is about1mg. There are beans, peanuts, millet, radish and Chinese cabbage with high zinc content in various plant foods. It is almost impossible to find a beautiful image of zinc in fruits and vegetables, water, plant protein, grains and eggs.
2. Zinc supplements
Besides dietary zinc supplementation, zinc supplementation is the most convenient way to supplement zinc at present. At present, the newest and safest zinc supplement product is protein zinc. It is understood that protein zinc is the best pure biological zinc supplement preparation in China at present, which is pure in biological state, can be taken on an empty stomach before meals, and is safe without any side effects such as intestinal irritation.
Taking protein zinc on an empty stomach before meals can also quickly activate the activity of digestive and absorptive enzymes in the intestine, and ultimately greatly improve the human body's own digestive and absorptive capacity and absorb more nutrients from food.
3. Calcium and zinc can't be supplemented together.
However, it has to be mentioned that many zinc supplement products on the market will claim to be able to "supplement both calcium and zinc". In fact, this is a way to mislead consumers. Zinc and calcium are incompatible and affect each other's absorption rate. Calcium and zinc compete as carriers and contain each other. You won't let me, and I won't let you.
At the same time, the content of calcium in the body is far more than that of zinc, and it is also more active than zinc. At the same time, supplementation will affect the absorption of zinc. Therefore, it is best to supplement these two trace elements separately. If zinc and calcium need to be supplemented at the same time, it is best to stagger the time, with an interval of more than 2 hours; Or it is best to supplement zinc during the day and calcium at night for the best absorption effect.
People's Network-What are the manifestations of zinc deficiency? How to supplement zinc correctly?