Can the Donguibogam's narrative that 'the back hurts because the kidney is weak' be explained by modern science as well? The insights of Korean medicine are deeply connected to modern neuroendocrinology, immunology, and musculoskeletal physiology. The 'kidney' mentioned in the Donguibogam does not simply refer to the anatomical kidney alone. It can be seen as performing functions very similar to the hypothalamic-pituitary-adrenal axis, which regulates our body's stress response and sustains vitality.
When chronic stress or overwork continues, this hypothalamic-pituitary-adrenal axis becomes hyperactivated or conversely experiences decreased function, causing abnormalities in the secretion of stress hormones such as cortisol. This triggers a systemic inflammatory response and leads to reduced bone mineral density, muscle weakness, and decreased immunity, which can elevate sensitivity to low back pain and slow down recovery. In particular, the tendency toward 'upper heat and lower cold' that Soyangin individuals easily experience is deeply related to autonomic nervous system imbalance in modern terms. When one is vulnerable to stress or the sympathetic nerve is hyperactivated, blood rushes to the upper body, the heartbeat quickens, and muscles tense easily.
Conversely, blood flow to the lower body becomes sluggish, making it cold, which can lead to lower body muscle weakness and increased tension in muscles around the spine, causing chronic low back pain. The same applies to a lumbar herniated intervertebral disc. Pain does not arise simply because a disc has protruded; in many cases, surrounding nerve inflammation, decreased blood flow, and weakened core muscles act in combination to aggravate the pain. 'Weakening of kidney function' ultimately signifies this energy depletion and loss of balance in the overall bodily system, which can reduce the elasticity of spinal ligaments and muscles and decrease the water content of the disc, accelerating degenerative changes. In addition, neurotransmitter imbalances can lower the pain threshold, making one perceive greater pain from the same stimulus. Thus, Soyangin low back pain can be understood not merely as a problem of bones or muscles, but as a result of disrupted energy metabolism, hormonal balance, and harmony within the autonomic nervous system. This explains scientifically why fundamental, whole-body health management is essential for a healthy back.
