The aim of this study is to further investigate the possibility that Gastroenterological disorders may be a risk factor for disordered eating in children and adolescents. This study will recruit children/ adolescents aged 5-17 and their parents, who are attending Great Ormond Street Gastroenterology Clinic and ask them to complete a screening questionnaire. The recruitment process will be on going for around 5 months until the study has around 300 participants. Following this initial questionnaire, participants who are categorised as screening positively for disordered eating and a 10% sample of participants that screen negatively, will be contacted to complete a further questionnaire interview that will look more specifically into this area.