Esophageal Cancer can develop as a result of acid reflux, where acid causes a corrosive action on the esophagus, which lacks the protective mucous coating of the stomach. This is independent of the amount of acid the stomach produces. Since H. Pylori tends to lower stomach acid levels, it actually reduces the risk of developing esophageal squamous-cell carcinoma and esophageal adenocarcinoma, that may have otherwise resulted from chronic esophageal reflux, or Barrett's syndrome. But as mentioned above, H. Pylori increases the risk of developing pancreatic and gastric cancers... Full Text