There are also companies designing "smart toilets" to understand the gut microbiome and changes in it for the user, e.g. https://www.ted.com/speakers/jun_wang h

There are also companies designing "smart toilets" to understand the gut microbiome and changes in it for the user, e.g. https://www.ted.com/speakers/jun_wang https://www.ted.com/speakers/jun_wang