A lot of people don't understand what heartburn is, but it's real simple to explain. The esophagus goes from the mouth down into the stomach. There's a connection there and there's a valve that keeps the stomach acid in the stomach. The stomach has lots of acid in it because it has to churn up the food in there and do its job. Sometimes, that acid pushes up, but, that valve keeps it from going into the esophagus. If you have a problem with the valve, or maybe you lay down and it can leak in, it gets into that esophagus which does not have a lining for acid and it hurts and you feel heartburn.
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