Acid reflux is a condition that is very common. But just because it is common does not mean that it is a comfortable condition. When digestion does not take place as it should the contents of your stomach will go back to the esophagus. These contents are highly acidic and are harmful.
Acid reflux is a fairly common condition that occurs when stomach acids and other stomach contents back up into the esophagus through the lower esophageal sphincter (LES).