Contrary to previous assumptions, the appendix, in particular the appendix, has an important function in the human body. It serves as a reservoir for beneficial intestinal bacteria and helps to restore the intestinal flora after infections or antibiotic treatment. In addition, the appendix contains lymphatic tissue, which plays an important role in the immune system. Studies show that the appendix helps to ward off pathogens and regulate inflammatory processes. It is therefore not a useless organ, but an active component of a healthy digestive and immune system.