Background
Among respiratory diseases, asthma is one of the most burdensome
disorder worldwide. Growing evidence disclose gut dysbiosis may
contribute to asthma via the gut-lung axis. Constipation can lead to
alteration of the gut microflora. The clinical impact of constipation on
asthma has not been researched. Therefore, we aim to assess the risk of
asthma in constipated patients by a nationwide population-based cohort
study.