Heartburn is an uncomfortable burning sensation that occurs when stomach acid backs up into your esophagus, and is felt behind the breastbone. Normally this is prevented by your lower esophageal sphincter (LES), but when your LES abnormally relaxes or weakens then stomach acid is allowed back into the esophagus – causing heartburn.
Occasional heartburn is rather common; however, if it occurs with any frequency then a gastroenterologist should be consulted. Untreated heartburn can lead to GERD and more severe illnesses like
Barrett’s Disease, and is even associated with the development of esophageal cancer.
