What harm does preservative do to the body?

Preservatives that have passed the national security inspection are harmless to human body.

Preservatives are food additives that can inhibit microbial activity and prevent food from spoilage. In order to make food have a certain shelf life, certain measures must be taken to prevent microbial infection and reproduction. Practice has proved that the use of preservatives is one of the most economical, effective and simple methods to achieve the above objectives.

Generally speaking, preservatives will not affect the body, because the most commonly used food preservatives are potassium sorbate and sodium benzoate. Look at their appearance, they are very similar to the sugar we usually eat.