Are food additives dangerous to health?

There are many food additives in our daily lives, but are they dangerous for our health? Some additives are considered to be potentially carcinogenic but from all over the world how do these codes code and make it easy to understand which is the service of our application

Food additives are substances added in small quantities to industrial foods to improve the flavor, texture, appearance ... Composed of a single molecule (unlike ingredients often more complex) they all have a code, Exxx, assigned by the Codex Alimentarius Commission.