One of the most common health problems facing the community is constipation. In general, constipation can be defined as the inability to have a bowel movement, which includes a variety of symptoms and can be chronic or sporadic. Chronic constipation is usually defined by a set of clinical symptoms known as the Rome criteria; The Rome criterion was revised several times after its introduction as the Rome I criterion in 1994.

Searching for relevant published documents was performed using the Ovid interface to the MEDLINE and Embase electronic databases. Articles that met the inclusion criteria were classified as chronic constipation and any type of constipation according to the constipation definition used in the study.