what causes burps
GERD is caused by laxity of the valve at the junction of the stomach and esophagus. This laxity allows significant amounts of food and stomach acids to flow back into the esophagus, causing burning pain, bloating and frequent burping. It can also cause stomach pain similar to an ulcer.
Belching cures: Swallowing less air. When you eat, slow down. Eating quickly makes you swallow more air, and that can cause hiccups as well as burping. Try to slow down and enjoy the meal; you might also find that you eat less and feel less full, too. A runny nose caused by a cold or allergy can make you swallow excessive air.