Gastroesophageal reflux is the backflow of the contents of the stomach into the esophagus.
It gastrointestinal tract consists of the oral cavity, pharynx, esophagus, stomach, small intestine and large intestine. It is part of the digestive system and is responsible for the movement of food and liquids in and out of the body.
At the connection point of esophagus and stomach lies a muscle, the lower esophageal sphincter. It opens to allow food into the stomach and then closes again. This prevents food and stomach acid from backing up into the esophagus.
When the pressure in the stomach is too high or when the sphincter does not function properly, some of the contents of the stomach can back up into the esophagus. This causes the symptoms of gastroesophageal reflux.
Some of these symptoms are heartburn, chest pain, coughing and choking when lying down. Also, asthma symptoms may increase while sleeping. Certain symptoms of the condition can be alleviated through diet and lifestyle changes, but in some cases medications or surgery are necessary.
