Causes diaphragmatic hernia
Just before the esophagus ends in the stomach, it passes through the diaphragm. At this passage there is a constriction in the esophagus, which sits just above the sphincter. In a diaphragmatic hernia, part of the stomach passes upwards through this hole in the diaphragm.
The constriction is no longer at the border between the two organs. Instead, it irritates the stomach and constricts it. This allows digestive juice to pass easily into the esophagus and irritate it, causing heartburn.
Causes of stomach problems
There are several stomach problems that can cause heartburn. Gastritis is often caused by bacteria and leads to increased acid production, which promotes the development of heartburn. A peptic ulcer or stomach cancer can affect the lower sphincter muscle of the stomach and can easily clog the stomach outlet. As a result, food remains in the stomach longer, which also leads to increased acid production. Bad breath
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