5 Key Symptoms of Low Vitality

How can the 'Qi' described in Donguibogam (Principles and Practice of Eastern Medicine) be meaningfully understood through modern science? I often liken this 'Qi' to our body's autonomic nervous system balance and mitochondrial energy production efficiency. Even without consciousness, our body's heart beats, we breathe, and it performs digestion, continuously carrying out life activities. All of this is thanks to the harmony of the autonomic nervous system, composed of the sympathetic and parasympathetic nerves. The Qi Deficiency state can be seen as this autonomic nervous system balance being disrupted, particularly as parasympathetic hypofunction or sympathetic hyperactivation. For example, symptoms like 'shortness of breath and fatigue' can be linked to reduced respiratory muscle efficiency or increased cardiovascular system burden. If the parasympathetic nerve does not function properly, blood vessels may not expand adequately, leading to inefficient oxygen and nutrient supply and potentially resulting in impaired lung function, making sufficient oxygen exchange difficult. Furthermore, the symptom 'voice is low and weak' can be linked to reduced whole-body muscle tension, including the vocal cord muscles, and neurotransmitter deficiency. If the activity of the nervous system decreases, the ability to control the subtle movements of muscles is impaired, affecting voice vocalization. The symptom 'spontaneous sweating (Zìhànchū)' can appear when there is a problem with abnormality of the thermoregulatory center, specifically the function of the autonomic nervous system that regulates sweat glands. Particularly when sympathetic nerve overactivation, sweating often occurs in unnecessary situations, which accelerates energy consumption and causes electrolyte imbalance, contributing to feelings of low energy. The symptom 'dizziness and blurred vision' is closely related to decreased cerebral blood flow. Blood pressure regulation becoming unstable or anemia can be causes, and this is also linked to the decreased ability of the autonomic nervous system to regulate vasoconstriction and relaxation. Finally, 'pale complexion (面色㿠白)' suggests the possibility of impaired microvascular circulation and anemia. If blood circulation is not smooth, sufficient oxygen and nutrients are not supplied to the skin, leading to a poor complexion. This is also a phenomenon that can occur when the autonomic nervous system does not properly regulate blood vessel motility. These symptoms go beyond simple fatigue and are deeply related to impaired mitochondrial function, our body's energy production. The chronic oversecretion of cortisol, the stress hormone, reduces the efficiency of mitochondria, which in turn leads to whole-body cellular energy deficiency, creating a vicious cycle that further entrenches the 'Qi Deficiency' state. Ultimately, Qi Deficiency can be described as a complex warning signal indicating a general decline in the efficiency of the body's systems.