How does modern science explain the wisdom of Donguibogam? Cold hypersensitivity of hands and feet is often more than just a sensation of chilliness; it frequently suggests complex problems involving our circulatory system and autonomic nervous system. The blood vessels in our body are like a vast highway network: warm blood pumped from the heart travels along these vessels to every corner of the body, supplying oxygen and nutrients while maintaining body temperature.
One of the most common causes of cold hands and feet is peripheral vasoconstriction. When our autonomic nervous system, especially the sympathetic nerve, becomes excessively activated due to various factors like stress, cold exposure, or fatigue, the blood vessels narrow and blood flow decreases. Thin peripheral blood vessels, such as those at the tips of fingers and toes, respond with particular sensitivity to this constriction, becoming cold like remote areas cut off from heating supplies. A prominent example closely linked to this vasoconstriction is Raynaud syndrome. When exposed to cold or psychological stress, fingers and toes characteristically turn white, then blue, and finally red.
Furthermore, an endocrine disease such as hypothyroidism can also be a major cause of cold hypersensitivity of hands and feet. Thyroid hormone plays an essential role in regulating our metabolism and maintaining body temperature; when this hormone is deficient, the systemic metabolic rate drops, heat production decreases, and cold hands and feet can result. In cases of anemia, cold syndrome can also appear because the blood itself is deficient or its oxygen-carrying capacity is reduced, making adequate blood supply to the tips of the hands and feet difficult.
Issues within the nervous system can likewise trigger cold syndrome and numbness. When nerves are compressed, as in spinal disc problems or carpal tunnel syndrome, paresthesia can occur in the areas innervated by those nerves, and the autonomic function that controls blood vessels can also be affected, leading to a circulatory disorder and a cold sensation. In addition, smoking constricts peripheral blood vessels and increases blood viscosity, hindering circulation, while chronic stress and anxiety worsen autonomic nervous system imbalance, serving as major factors that exacerbate cold syndrome.
In this way, cold hands and feet can be a warning sign signaling abnormalities in various systems across the entire body, including qi and blood circulation, hormonal balance, and nervous system function, beyond mere discomfort. If symptoms are severe or interfere with daily life, it is necessary to make an effort to find and address the root cause through accurate diagnosis and proper management.
