By Trevor Lockett, CSIRO
Number twos are a tricky subject. We all do them. Indeed, excreting waste is critical to life. But polite society and its rules of etiquette ensure we’re rarely brave enough to speak about them.
The faeces (or stools) we produce can provide a valuable real-time window into the health of your large bowel (or colon) and gastrointestinal tract. So let’s put those rules aside.
Scientists research many odd topics and stool form is no exception. In 1998, Stephen Lewis and Ken Heaten from the University of Bristol developed a seven-point stool form scale, ranging from constipation (type 1) to diarrhoea (type 7).
Today, the Bristol Stool Chart allows people with gastrointestinal symptoms to clearly describe to their doctor what they are seeing in the toilet without having to provide samples.