Hidden deep in our intestines, 100,000 billion bacteria are keeping us healthy by producing a range of molecules. Although their names may be perplexing: Fecali bacterium, Roseburia, Akkermansia mucinifila, Eubacterium halli, as well as being invisible to the naked eye, they could revolutionize the future of medicine. That is, if our modern lifestyle doesn't wipe them out first.
