what causes hernias in the esophagus
A diaphragmatic hernia that occurs through this opening is called a hiatus hernia. The cause of hiatus hernia is usually unknown, but it may be caused by stretching of the bands of tissue that are attached between the esophagus and diaphragm at the hiatus. The condition is more common among people who are older than 50, who are overweight (particularly women), or who smoke.