Small Intestinal Bacterial Overgrowth in Children: A State-Of-The-Art Review Small intestinal bacterial overgrowth (SIBO) is a heterogenous and poorly understood entity characterised by an excessive growth of select microorganisms within the small intestine. This excessive bacterial biomass, in turn, disrupts host physiology in amyriad of ways, leading to gastrointestinal and non-gastrointestinal symptoms and complications. SIBO...