Modern medicine can explain the wisdom of Donguibogam through the concepts of the gut-brain axis and the autonomic nervous system. Our brain and gut are not merely independent organs, but are intimately connected like a highway, constantly exchanging information. This means psychological factors like stress or anxiety directly affect intestinal motility, and conversely, poor intestinal health can influence mood or cognitive function.
In particular, the autonomic nervous system governs functions regulated automatically without our conscious effort, such as digestion, heartbeat, and breathing. This autonomic nervous system is largely divided into the sympathetic nerve and the parasympathetic nerve. While the sympathetic nerve becomes activated during tension or stress to conserve energy, the parasympathetic nerve activates in calm states to aid digestion and rest. Modern individuals frequently experience excessive activation of the sympathetic nerve and suppression of the parasympathetic nerve due to chronic stress and irregular lifestyle habits. When this autonomic nervous system balance is disrupted, intestinal peristalsis decreases and digestive secretion drops, creating an environment prone to dyspepsia alongside constipation.
How, then, does LI4 acupressure help through scientific principles? Although LI4 is located on the back of the hand, stimulating it activates sensory nerve fibers distributed in the skin and muscle, sending signals to the brain. These signals reach the brainstem, hypothalamus, and even the limbic system that regulates emotions. In particular, it is known to promote the activity of the vagus nerve, the main axis of the parasympathetic nerve. Because the vagus nerve directly regulates gastric and intestinal motility, as well as digestive enzyme and gastric acid secretion, stimulating LI4 can contribute to promoting intestinal peristalsis and enhancing digestive capacity.
Furthermore, LI4 stimulation can induce the release of natural pain-relieving substances such as endorphins, helping ease abdominal discomfort or pain. One can also expect a reduction in the overall stress response by regulating the secretion of cortisol, a stress hormone. It also helps improve bowel function by increasing blood flow volume to the intestines, facilitating the supply of nutrients and oxygen to intestinal cells. The communication of qi described in Oriental medicine can thus be explained in modern medicine as a complex physiological response involving neurotransmitter and hormone regulation alongside blood flow improvement. Rather than merely clearing an obstruction, it essentially acts as an effective switch restoring balance to the body's most critical regulatory networks: the autonomic nervous system and the gut-brain axis. In this way, LI4 plays a vital role not only in digestive constipation and abdominal discomfort, but also in improving overall physical condition.
