Steve’s main interests are in paediatric gastroenterology with a focus on interventions to improve gut health in malnutrition and inflammatory bowel disease with current studies in Nigeria, Senegal, India and Indonesia. Previously, he has undertaken clinical research in probiotics in the prevention of atopy in infants and also antibiotic-associated diarrhoea in older people, malaria and the protective effect of inherited haemoglobin and red cell variants against malaria.