Indeed, the connection between the gut and the mind described long ago in Donguibogam has become a vital concept in modern medicine. This is known as the gut-brain axis. Containing an immense number of neurons to the point of being called our second brain, the gut maintains a highway-like relationship that constantly exchanges signals with the brain.
Irritable bowel syndrome is a functional disorder in which chronic abdominal pain, abdominal distension, and alternating diarrhea or constipation recur even without visible inflammation or structural abnormalities in the gut. Why do these symptoms appear? Modern research in neurology and endocrinology points to several causes.
First, there is visceral hypersensitivity. The gut reacts excessively even to minor stimuli. While normal gut motility or intestinal gas causes no issues for most people, patients with irritable bowel syndrome experience severe pain or discomfort. It is similar to having hypersensitive skin that feels pain from even a slight brush.
Second, an intestinal motility disorder is a factor. If the gut moves too slowly, constipation develops; if it moves too fast, diarrhea can be triggered. This intestinal motility is heavily influenced by the autonomic nervous system, and psychological factors such as stress or anxiety can disrupt autonomic nervous system balance, throwing gut motility into disarray. This connects directly to what Donguibogam refers to as qi stagnation.
Third, gut dysbiosis plays a major role. In our gut, countless beneficial bacteria and harmful bacteria live in balance. When this balance is disrupted, the barrier function of the intestinal mucosa weakens, inflammatory responses increase, and intestinal permeability rises, leading to leaky gut syndrome and causing diverse symptoms of discomfort. Did you know that about 90 percent of serotonin, the happiness hormone, is produced in the gut? Because gut microbiota are involved in the generation of serotonin, gut health is directly tied to mental health.
Fourth, stress and psychological factors are potent aggravating factors in irritable bowel syndrome. When the brain experiences stress, stress hormones such as cortisol are secreted, directly impacting intestinal motility and the function of the intestinal mucosa. This is why many people experience stomachaches or an urgent need to use the restroom right before an important exam or when feeling tense. In essence, the brain and the gut share each other's emotions.
Ultimately, irritable bowel syndrome is not solely an intestinal issue, but a multifaceted condition arising from the complex interplay of the gut-brain axis, the gut microbiota environment, and psychological factors. Therefore, treatment requires an integrated approach that addresses stress management and lifestyle improvements alongside gut health. After all, our bodies are truly complex, interconnected systems.
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