Why do we ? We can accept the idea of living in symbiosis with billions of bacteria in our gut, and question the idea that a single specie can cause disease by invading our body. The main hypothesis behind rejecting Pasteur Theory is the idea that elevation of toxemia is the cause of disease, and symptoms are initiated by the body to get rid of it and restore balance. That toxemia can be induced internally (excess stress or physical activities, internal waste getting stuck...), or externally (toxins, poisons, anything not supposed to be inside). Presence of bacteria inside the body (the microbiome lives outside) is a consequence rather than a cause.