A team of researchers at Monash University and RMIT University in Australia have recently developed an ingestible capsule that’s able to measure the different concentrations of gas in your gut. This information can then be wirelessly transmitted via a receiver device to a smartphone, allowing individuals to monitor the effect of their diet in real time.

The 26-millimeter-long capsules, about the size of a multivitamin pill, contain a bunch of electronic sensors that can detect levels of oxygen, hydrogen, and carbon dioxide. Levels of these gases, along with nitrogen and methane, in the gut have been shown to be useful in understanding if anything is wrong with your digestive system. They also give a fair indication of the state of the gut’s bacteria biome.

Sources :- https://spectrum.ieee.org/the-human-os/biomedical/diagnostics/swallowable-sensor-could-improve-your-diet