OBJECTIVES: Immune diseases such as asthma, allergy, inflammatory bowel disease, and
type 1 diabetes have shown a parallel increase in prevalence during recent decades in
westernized countries. The rate of cesarean delivery has also increased in this period and
has been associated with the development of some of these diseases. METHODS: Mature
children born by cesarean delivery were analyzed for risk of hospital contact for chronic
immune diseases recorded in the Danish national registries in the 35-year period 1977 …