I understand so well the distress of those suffering from seasonal allergies. Far beyond simple discomfort, allergies drastically reduce quality of life and are recognized in modern medicine as an exceptionally complex issue. The concepts of movements and transformations of heaven and earth qi and deficiency of upright qi spoken of in Donguibogam can be elucidated even more clearly through modern neurology, immunology, and recent spotlighted research on the gut-brain axis.
First, allergic reactions tied to seasonal shifts are deeply connected to our body's autonomic nervous system. The autonomic nervous system is divided into sympathetic and parasympathetic nerves. The sympathetic nerve is primarily responsible for the fight-or-flight response, tensing the body and promoting inflammatory responses. In contrast, the parasympathetic nerve governs rest and digest, relaxing the body and playing a vital role in immunomodulation. During seasonal changes, wide daily temperature ranges and numerous stressors make it easy for autonomic nervous system balance to shatter. When the sympathetic nerve becomes excessively activated in particular, the body perceives external stimuli as threats, potentially triggering unnecessary immune responses, which worsens allergies. At this point, excessive secretion of inflammatory mediators like histamine produces classic symptoms such as a runny nose, sneezing, and pruritus.
Furthermore, it is more accurate to view the core of allergic disease not as decreased immunity, but rather as an imbalance in the immune response. Trouble arises when our immune system reacts overly aggressively toward specific antigens, or allergens, or conversely, when defenses weaken so much that it cannot properly fend off external invaders. Recent studies reveal that gut health plays a decisive role in balancing this immunity. Over 70% of our body's immune cells are concentrated in the gut, and when the balance of the gut microbiome collapses, it adversely impacts the overall immune system, potentially intensifying allergic reactions. Deteriorating gut health can lead to increased intestinal mucosal permeability known as leaky gut syndrome, acting as a mechanism where food particles and toxins enter the bloodstream to induce a systemic inflammatory response, worsening allergies.
Moreover, chronic allergies affect brain function. Nasal congestion and sleep deprivation hinder oxygen supply to the brain, which can lead to impaired concentration, memory impairment, and chronic fatigue. Additionally, emerging studies show that persistent inflammatory responses from allergy symptoms can affect specific brain regions, inducing mood disorders like depression and anxiety. Just as Donguibogam stated that when the upright qi within the body is shaken, the mind also suffers, modern medicine equally values the organic connection between body and mind. Ultimately, allergies are not merely a problem of a single organ, but a systemic balance issue encompassing the autonomic nervous system, immune system, gut health, and mental health where the clues to a solution can be found.
