what causes nighttime heartburn
Causes of Heartburn At Night. In addition to normal heartburn causes, such as eating irritating foods and overeating in general, there are a few specific causes of heartburn at night which may increase your symptoms: Body Position: Body position is the number one to most cases of heartburn at night. The reason is simple: when you are lying flat, fluid no longer has to go against gravity to leave the stomach and enter the esophagus (heartburn is caused by the stomachâs contents moving into the esophagus).