ELI5: Explain Like I'm 5

E number

An E number is a code given to different chemical substances that are added to our food, such as colors, flavors, and preservatives, to make them look or taste better or last longer. These codes start with the letter 'E' and are followed by a number. E numbers are used in many countries by food manufacturers to label the additives they use in their products. Just like how our parents name us to identify us, these E numbers are used to identify the different substances used in our food. Some of these additives are completely safe for us to eat, while others might cause some health problems. So E numbers are like the name labels for different friends in our food. We need to know which ones are good and which ones are not so we can make sure we stay healthy!