In the UK around one to two in 10 people currently are believed to be suffering from Irritable Bowel Syndrome - commonly referred to as IBS.
It causes symptoms such as stomach cramps, bloating, diarrhoea and constipation which tend to come and go over time lasting anywhere from a few minutes to weeks and even months at a time.
There is no cure for IBS but diet and lifestyle changes can help alleviate and control symptoms.