![](https://www.gesunde-bakterien.de/wp-content/uploads/2015/07/Fotolia_30341944_S1-721x320.jpg)
Many bacteria have a special protective function for our health. It’s as if they played the role of biological peacekeeping forces in the constant battle between pathogens and the body’s defences. They provide for a balance of power, an equilibrium between harmful and healthy bacteria. What is the actual impact of these “blue beret bacteria”?