Following the Introduction Diet fully is essential for people with serious digestive symptoms: diarrhoea, abdominal pain, bloating, some cases of constipation, etc. This diet will reduce the symptoms quickly and initiate the healing process in the digestive system. Even for healthy people, if you or your child gets a ‘tummy bug’ or any other form of diarrhoea, following the Introduction Diet for a few days will clear the symptoms quickly and permanently usually without needing any medication.