Oranges: Although oranges are rich in nutrients, but contain lutein, eating too much, easy to produce "lutein skin disease", abdominal pain and diarrhea, and even cause bone disease. Therefore, children should not eat more than 4 medium-sized oranges a day. Spinach: spinach contains a lot of oxalic acid, oxalic acid in the human body meets calcium and zinc to produce calcium oxalate and zinc oxalate, not easy to absorb and discharge. Children's growth and development need a lot of calcium and zinc, if the lack of calcium and zinc in the body, not only can lead to bone and tooth dysplasia, but also affect intellectual development. Eggs: Although eggs are nutritionally more comprehensive food, but if you eat too much, it will increase the content of cholesterol in the body, easy to cause excess nutrition, resulting in obesity can also increase the burden of gastrointestinal, liver and kidney, causing dysfunction. Therefore, children should not eat more than 3 eggs a day. Strong tea: Strong tea contains a lot of tannic acid, tannic acid in the human body will produce iron tannic acid, difficult to be absorbed by the human body, easy to cause iron deficiency in the human body. Iron deficiency in children will not only cause anemia, but also affect intellectual development. Jelly: Jelly is not made by adding sugar to water juice, but by using a thickening agent. Essence. Sour agents, colorants, sweeteners formulated, these substances have no nutritional value to the human body, but have certain toxicity, eating more or often eat will affect the growth and development of children and intellectual health. Salted fish: All kinds of salted fish contain a large amount of dimethylnitrite, which will be converted into highly carcinogenic dimethylnitrosamines after entering the human body. Research shows that regular consumption of salted fish before the age of 10, the risk of cancer in adulthood is 30 times higher than the average person. Therefore, children should not often eat more salted fish. Bubble gum: The plasticizer in bubble gum contains slightly toxic, and its metabolite phenol is also harmful to the human body. In addition, the way children eat bubble gum is very unsanitary and easy to cause gastrointestinal diseases. Saccharin: At present, children eat sweetened foods and drinks, many added saccharin. According to research, large amounts of saccharin can cause blood, heart, lung, peripheral nerve diseases, and damage stomach, kidney, gallbladder, and other organs. Therefore, saccharin should not be used in food for patients and children. Beans: Beans contain a factor that can cause goiter, can promote the elimination of thyroxine in the body, resulting in a lack of thyroxine, the body to adapt to this need to increase the size of the thyroid. Children are more vulnerable in the growth and development period, so children should not often eat more beans and beans. Ginseng: At present, there are many ginseng foods on the market, such as ginseng candy, ginseng malted milk powder, ginseng milk powder, ginseng biscuits and ginseng royal jelly and so on. Ginseng has the effect of promoting the secretion of sex hormones, which can lead to premature puberty in children and seriously affect the normal development of the body. Canned food: canned food in the production process are added to a certain amount of food additives, additives have a small amount of toxicity, little impact on adults, the developing period of children have a great impact not only damage health, but also easy to cause chronic poisoning, so children should not eat canned food. Popcorn: Popcorn contains a high amount of lead, lead into the human body damage the nervous system, digestive system and hematopoietic function. Children have weak detoxification function of lead, and often eat popcorn, which is easy to cause chronic along poisoning, appetite loss and diarrhea. Irritability, purple gums and slow growth and development. Instant noodles: instant noodles contain food coloring and preservatives that are harmful to the human body, etc. Eating or eating more is easy to cause malnutrition in children, affecting growth and development and health. Sunflower seeds: sunflower seeds contain unsaturated fatty acids, children eat too much will consume a lot of choline in the body, affect the function of liver cells, but also cause "fluid deficit" caused by children's xerosis. Cola beverage: Cola beverage contains a certain amount of caffeine, caffeine has an exciting effect on the central nervous system, which is potentially harmful to the human body. Because children's tissues and organs have not yet developed, resistance and detoxification function is weak, the harm will be greater, so children do not drink more cola drinks. Animal fat: children often eat or eat more animal fat, not only will cause obesity, affect the absorption and utilization of calcium, and easily cause calcium deficiency and cause disease over time. Roast lamb: kebabs and other fire roast, smoked food, in the process of smoking will produce strong carcinogens, children often eat or eat more of these coking foods, carcinogens can be stored in the body and make adults prone to cancer. Chocolate: children eat too much chocolate, will make the central nervous system in an abnormal state of excitement, anxiety, muscle twitching, rapid heartbeat, affect appetite. Salt: children's salt should not exceed 5 grams per day, if a lot of salt, adults are prone to high blood pressure, coronary heart disease, stomach cancer and other diseases. Pig liver: Pig liver contains a lot of cholesterol, children often eat or eat more pig liver, will increase the cholesterol content in the body, easy to induce heart, brain and blood diseases in adulthood.