David Wang from the school of Dentistry of UCLA makes an astonishing claim in a company interview about the 1.5 l saliva that we produce every day: “…Real-time changes in our body could be monitored by having sensors to sense changes … implant a tooth with a sensor … that comes into the astronaut’s oral cavity…”. Even genomic and proteomic analytes are possible if we think of recent lab on a chip developments. Yea, yea.