One recent theory suggests that the appendix acts as a safehouse for beneficial gut bacteria in the event that the gut microflora is wiped out: https://www.ncb

One recent theory suggests that the appendix acts as a safehouse for beneficial gut bacteria in the event that the gut microflora is wiped out: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3551545/ https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3551545/