DefinitionNecrotizing enterocolitis is the death of intestinal tissue. It primarily affects premature infants or sick newborns.Causes, incidence, and risk factorsNecrotizing enterocolitis occurs when the lining of the intestinal wall dies and the tissue falls off. The cause for this disorder is unknown. However, it is thought that a decrease in blood flow to the bowel keeps the bowel from producing mucus that protects the gastrointestinal tract. Bacteria in the intestine may also be a cause.This disorder usually develops in an infant that is already ill or premature, and most often develops while the infant is still in the hospital.Those with a higher risk for this condition include:Premature infantsInfants who are fed concentrated formulasInfants in a nursery where an outbreak has occurre