<s>[INST] Hi I am Nitin 29 years of age and having weight 50 kg.I am suffering from acid re flux since around 5 years.But as per doctor advised changed routine helped me to reduce it.Can reflux cause cancer? [/INST] Hi. Acid reflux also called GERD (gastro esophageal reflux disease) can result in Barretts esophagus. Barretts affects lower esophagus and gastro-esophageal junction  with change of epithelium (inner lining) of esophagus to that of stomach. This is called metaplsia which can also lead to dysplasia and adenocarcinoma. The recent increase in adenocarcinoma (cancer) in lower esophagus observed in western population is because of it.The good thing is that you have adapted lifestyle changes and your doctors advice to settle acid reflux. Discuss with your doctor whether there were any barretts esophagus changes and any biopsy done. If yes a follow up endoscopy should be done to see improvement if any.I hope your question has been answered. I would be happy to answer any further questions if any. Thankyou for choosing Healthcare Magic. </s>