What Causes Reflux
With the various forms of reflux, the question really comes up as “What is the true root cause?” Today, most physicians and many people think of acid coming up from the stomach. What comes from the stomach is not solely acid. In fact, it is impossible for you to selectively decide to take the only the acid from your stomach and reflux that into your esophagus or higher.
What actually comes up is the entire gastric contents. What allows that to happen is a defect that occurs in the sphincter or the check valve that exists between the esophagus and the stomach itself. This check valve is known as the lower esophageal sphincter.
What we now know is that Reflux is a disease caused by the degeneration of the lower esophageal sphincter over time. That degeneration is caused by our dietary excesses. Increased amounts of alcohol or caffeine as well as eating late at night and going to bed immediately afterward are good examples. Stress itself can cause increased amounts of reflux. Obesity is also a very important influence over this problem. When the sphincter loosens, it allows the pressure from the stomach to force the contents from the stomach into the esophagus or even higher up into the throat area.