Before the discovery of Helicobacter pylori, many cases of gastritis were considered chronic but relatively harmless conditions. For a long time, it was believed that gastritis was caused by an excess level of stomach acid, and treatment was aimed at reducing acidity. Other theories included the role of stress, improper diet, and an unhealthy lifestyle in the development of gastritis.
With the emergence of new data, it became clear that the presence of this bacterium in the stomach is no...
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