The acidity of the stomach is a kind of burning or burning up to the larynx. It is normal for the cardia (the part of the stomach closer to the esophagus) to remain closed while the digestion is done. Occasionally, however, this valve relaxes and passes the gastric acids into the esophagus. This process is called gastroesophageal reflux.
Keep in mind that the tissues of the esophagus resent the action of acid and this can lead to a disease called Barrett's esophagus, the pre-cancerous esophagus.
The acidity of the stomach is very frequent and almost everyone has suffered on occasion, although there are people who suffer permanently.
Their appearance is associated with age, overweight and obesity and bad eating habits due to the ingestion of foods that are very seasoned or difficult to digest and to other inappropriate actions such as lying down after meals.
