2. spinach. Spinach contains a lot of oxalic acid. When oxalic acid meets calcium and zinc in the human body, it will produce calcium oxalate and zinc oxalate, which are excreted before being absorbed. Children need a lot of calcium and zinc for their growth and development. If the body is deficient in calcium and zinc, it will not only lead to poor development of children's bones and teeth, but also affect the development of intelligence.
3. strong tea. Strong tea contains a lot of tannic acid. Tannic acid will produce iron tannic acid when it meets iron in human body, which is difficult to be absorbed by human body and easy to cause iron deficiency. Iron deficiency in children will not only cause anemia, but also affect the development of intelligence.
4. oranges. Some mothers say that eating more fruits is always right, but it is really wrong. Although oranges are nutritious, they contain lycopene. Eating too much can cause "lycopene dermatosis", abdominal pain and diarrhea, and even bone diseases. Therefore, children should not eat more than four oranges a day.
5, bubble gum. This is a kind of food that many children like to play with, but we can't ignore his problems. The plasticizer in bubble gum is slightly toxic, and its metabolite phenol is also harmful to human body. In addition, many children eat bubble gum in an unsanitary way, which is easy to cause gastrointestinal diseases in children.
6. salted fish. Fish is a relatively healthy meat, but this does not include salted fish. All kinds of salted fish contain a lot of dimethyl nitrite, which will be converted into dimethyl nitrosamine with strong carcinogenicity after entering the human body. Studies have shown that eating salted fish before the age of 10 is 30 times higher than that of the average person in adulthood. Therefore, children should not eat salted fish often.
7. jelly. Now many people know that jelly is not a good thing and try not to give it to their children, but there may be parents who can't stop their children from crying. Jelly is not made of fruit juice and sugar, but of thickener, essence, sour agent, colorant and sweetener. These things have no nutritional value to human body, and their toxicity is certain. Eating too much or too much will affect children's growth and mental health.
8. beans. Maybe you don't know that beans contain a factor that can cause goiter. This factor can promote the excretion of thyroxine, which will lead to the lack of thyroxine in the body. In order to meet this need, the human body will increase the volume of the thyroid gland. Children are more vulnerable in the process of growth and development, so children should not eat more and often eat beans.
9. saccharin. We may not find this kind of thing directly in food, but saccharin is added to many sweet foods and drinks in children's food at present. According to research, a large amount of saccharin can cause diseases of blood, heart, lung and peripheral nerves, and damage organs such as stomach, kidney, gallbladder and bladder. Therefore, our country expressly stipulates that saccharin should not be used in children and children's food, so parents must see the formula clearly when choosing snacks for their children.
10, ginseng. People who saw ginseng affirmed its nourishing function, so there are many ginseng foods, ginseng candy, ginseng malt extract, ginseng milk powder, ginseng biscuits and ginseng royal jelly on the market. But parents should also pay attention to the promoting effect of ginseng on sex hormone secretion. Eating people by children will lead to precocious puberty and seriously affect the normal development of the body.