Brief Answer: Most commonly it is due to air swallow. Detailed Answer: Hello XXXXXXX Thanks for writing to XXXXXXX Burping is most commonly due to swallow of air during eating or drinking. However it is also associated with Gall bladder calculus,Gastro-esophageal reflux disease etc.It is important to know any other associated symptoms like nausea,pain etc. You need few investigations so that exact cause can be known. You need routine hemogram,RBS,LFT,RFT,Ultrasound of abdomen,upper GI endoscopy. Ultrasound is very sensitive for hepatobiliary system and it should be done. Other causes like motility disorder,anxiety,gastric outlet obstruction etc should also be excluded. You are 75 years old so that all causes should be considered and excluded. You don't worry.You should consult your doctor.Exact treatment depend upon clinical examination and investigation reports. Get well soon. Hope i have answered your query. Further queries are most welcome. Take Care Dr.Indu XXXXXXX

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