Modern medicine explains the wisdom of Donguibogam through more specific scientific mechanisms. One of the core causes of reflux esophagitis is dysfunction of the lower esophageal sphincter connecting the esophagus to the stomach. When this sphincter loosens, gastric acid flows backward into the esophagus.
The factor playing an essential role here is the vagus nerve. Originating from the brain and connecting to the heart, lungs, and digestive organs, the vagus nerve is one of our body's largest nerves and the core of the parasympathetic nervous system responsible for rest and digest. This vagus nerve is deeply involved in regulating intestinal peristalsis, properly maintaining gastric acid secretion, and controlling lower esophageal sphincter pressure. Put simply, it acts as the commander overseeing all stomach movements.
What happens if vagus nerve activity declines or our autonomic nervous system balance breaks down due to chronic stress, anxiety, or irregular lifestyle habits? Just as Donguibogam describes liver qi stagnating, modern medicine shows that excessive stress hormone secretion can overactivate the sympathetic nervous system, thereby suppressing vagus nerve activity. When vagus nerve function weakens, the lower esophageal sphincter becomes lax and fails to prevent acid reflux, while gastrointestinal digestive motility drops, leaving food in the stomach longer and creating an environment where reflux occurs even more easily.
Furthermore, the vagus nerve is the key pathway of the gut-brain axis linking the gut and the brain, driving bidirectional communication where stomach issues impact brain function and brain stress worsens stomach symptoms. Therefore, reflux esophagitis must be approached from a whole-body perspective encompassing digestive motility, nervous system balance, and stress management, rather than treating it merely as an isolated issue of gastric acid secretion. Beyond the stomach, restoring harmony and balance across our entire body is what matters.
