1, can cause harm to human body, and the toxicity of food additives refers to its ability to cause harm to human body. Toxicity is not only related to the chemical structure and physical and chemical properties of the substance itself, but also related to its effective concentration, action time, contact route and location, interaction between substances and functional state of the organism. Therefore, regardless of the toxicity and dose of food additives, there is a problem of the relationship between dose and effect on human body, that is, substances will show toxic effects only when they reach a certain concentration or dose level.

2. Trans fats, refined grain products, salt and high fructose syrup are the most common ingredients in processed foods, which are harmful to human health.

3. Some of them are harmful if used in excess, such as citric acid, stevioside, aspartame, sodium cyclamate, Finnish white pigment, vanillin, ethyl maltol, potassium sorbate, etc. , as long as excessive addition is basically harmless.