Second, should not drink cola beverages. Coke is a caffeinated beverage that interferes with children’s memory and excites the children’s central nervous system, which is prone to ADHD. 
Third, should not eat plum powder. Long-term eating more plum powder (fine), will make the acid content in the stomach increased significantly, the gastric mucosa will be corroded, prone to gastric and duodenal ulcers. 
Fourth, should not eat more sugar. Sugar is an acid food that does not contain calcium. Excessive sugar consumption causes the body fluids to become neutral or weakly acidic. If the body wants to return to normal weak alkaline, it must consume the basic substance in the body - calcium. As time goes on, it will affect children's bone development. 
Fifth, should not eat more eggs. Children's gastrointestinal various digestive enzymes secrete less. Excessive consumption of eggs will increase the burden of gastrointestinal, causing indigestion diarrhea, but also cause vitamin K deficiency, irritability, pale, face rash, lethargy, hair loss and other symptoms. 
Six, should not eat canned food. Canned foods must be added with certain preservatives, pigments and other additives. Due to immature children's development, the tissues of the body have a low response to chemical substances and detoxification functions. Therefore, consumption of canned foods will increase the detoxification burden on organs and even cause chronic poisoning due to the accumulation of certain chemical substances. 
Seven, should not eat orange juice or juice, fish oil supplements. The main components of fish oil are vitamin D and vitamin A. Excessive vitamin D increases the body's absorption of calcium and causes hypercalcemia, causing calcium deposits in the kidneys, blood vessels, bronchi, and even the cornea. The performance is not to eat, dry skin, vomiting, drink plenty of urine, weight loss and so on. Excessive amounts of vitamin A can also be toxic. 
Eight, should not eat food added to ginseng. Ginseng has a role in promoting the secretion of sex hormones. Preschoolers will experience precocious puberty in children, and severely affect children's normal growth and development.
Source: Chinese maternal and infant network
First, do not chew bubble gum. The main ingredients of bubble gum are rubber and plasticizers. Rubber is added vulcanization accelerator, antioxidants and other additives, all have a certain toxicity; plasticizers also have a certain degree of toxicity, if eaten easily cause accumulation of poisoning. 