Heartburn, or acid reflux, occurs when stomach acid splashes up against the lining of the esophagus. When this happens, heartburn is a common drawback. When the lower esophageal sphincter is damaged or weak, it can cause reflux (LES). This mechanism's primary purpose is to block the passage of stomach acid into the esophagus. The amount of stomach acid you produce may be influenced by the foods you eat. The chronic and severe form of acid reflux, called gastroesophageal reflux disease, can be avoided by following a healthy eating plan (GERD).
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