In modern medicine, food retention often refers to complex causes beyond a simple lack of digestive enzymes, including hypofunction of gastrointestinal motility, gastric hyperacidity or deficiency, and stress-induced gastrointestinal disorders. In particular, functional dyspepsia is the most common diagnosis, describing a condition where chronic bloating, epigastric pain, and early satiety persist even though an endoscope or other examinations show no structural abnormalities.
The concept of blocked qi described in the Donguibogam aligns closely with the autonomic nervous system in modern medicine. The gastrointestinal tract responsible for digestion is regulated by the autonomic nervous system, which operates automatically. This system is divided into the sympathetic nerve and the parasympathetic nerve. The sympathetic nerve activates during stress, suppressing gastrointestinal motility and diverting blood toward the muscles or brain. In contrast, the parasympathetic nerve activates during rest, promoting gastrointestinal motility and aiding digestion.
Many instances of acute food retention or functional dyspepsia occur when stress, anxiety, or overwork trigger excessive sympathetic activity. The body acts as though it is in an emergency, temporarily putting digestive processes on hold. Peristalsis of the gastrointestinal smooth muscle slows, and gastric juice secretion becomes irregular, causing food to stay in the stomach longer and leading to trapped gas and bloating.
Modern science explains the effectiveness of LI4 acupressure through neurological reflexes and pain relief mechanisms. LI4 is an acupoint located between the thumb and index finger on the back of the hand, belonging to the large intestine meridian. While closely tied to the large intestine, this pathway connects to various organs through neural networks.
LI4 is an area with high nerve density. Applying acupressure stimulates nociceptors, sending signals to the brain that promote the release of natural pain-relieving substances such as endorphins. It also activates the descending pain modulatory system, raising the overall pain threshold and reducing discomfort, much like turning down the volume on pain.
Studies also suggest that stimulating LI4 may indirectly activate the vagus nerve. As the primary component of the parasympathetic nerve, the vagus nerve is the longest nerve connecting the brain to major organs, including the heart, lungs, and digestive system. Activating the vagus nerve helps promote gastrointestinal motility, regulate inflammatory responses, and ease the stress response. Acupressure on LI4 encourages a relaxation response, calming an overactive sympathetic nerve and relatively increasing parasympathetic activity. This ultimately helps normalize gastrointestinal motility and ease dyspepsia symptoms.
Acupuncture research further indicates that stimulating specific acupoints may influence the secretion of gastrointestinal motility hormones such as gastrin and motilin. Through these combined neurological and endocrinological mechanisms, LI4 acupressure does more than unblock qi; it scientifically helps restore systemic balance. The way modern science substantiates the Donguibogam's insights into stress-induced stomach problems is truly remarkable.
