Undereating and Heartburn: Why Skipping Meals Worsens Reflux

Heartburn is the most common symptom of acid reflux and gastroesophageal reflux disease (GERD). It occurs when stomach acid flows upward into the esophagus, irritating its sensitive lining. This backflow is closely linked to the lower esophageal sphincter (LES), a muscular valve that normally acts as the main anti-reflux barrier keeping acid in the stomach. […]