Millions experience heartburn and the more serious condition gastroesophageal reflux disease (GERD) daily. And research shows that nighttime heartburn affects nearly four out of five of heartburn sufferers -- disturbing sleep and impairing their ability to function the next day.
What are the common causes of acid reflux disease? Doctors aren't always sure. Triggered by an increase of acid in your esophagus, acid reflux disease may develop for a variety of reasons. Here are some of the common causes of acid reflux disease.