A meta‐analysis of the association between Caesarean section and childhood asthma

Children born by Caesarean section have modified intestinal bacterial colonization and consequently may have an increased risk of developing asthma under the hygiene hypothesis. The results of previous studies that have investigated the association between Caesarean section and asthma have been conflicting.

To review published literature and perform a meta-analysis summarizing the evidence in support of an association between children born by Caesarean section and asthma.