The appendix is a small pouch that protrudes from the beginning of the large intestine. Its true function is still full of controversy in the medical community.
Some people think that the appendix is a degenerating organ – the primitive humans have to rely on the appendix to digest the leaves and bark, but with the change of eating habits, this organ is now useless.
One big evidence supporting this theory is that those who cut off the appendix can still live normally and are healthy.
It has also been suggested that the appendix has important immune functions and can be used to store healthy intestinal bacteria and assist in recovery when the human body is infected.