What happens if i don't treat acid reflux?

Mucosal changes: In the worst case scenario, longstanding untreated esophageal reflux can lead to changes in the lining of the esophagus that may increase risk of certain esophageal cancers. You should see your doctor to discuss whether or not your pattern of reflux puts you at higher risk.

Not good: The acid contnues to cause damage to the esophagus. Ultimately can lead to cancer of the esophagus.

Nothing to cancer: In most people with mild or intermittent disease no treatment doesn't really cause any future problems. But in some people with more severe or persistent reflux you can develop scarring and the condition called barrett's esophagus. Also spasm can be more more of a problem. This would show up as difficulty in swallowing and food getting stuck. Barrett's esophagus can put you at high risk of developing esophageal cancer.