The wisdom found in Donguibogam offers remarkable clarity. The traditional teaching that cold extremities stem from the flow of blood rather than just chilly weather aligns closely with modern medical understanding. Cold hands and feet, numbness in hands and feet, and low body temperature are signals that arise from the complex interplay of several bodily systems.
The first factor to consider is an imbalance in the autonomic nervous system. Our body has sympathetic nerves and parasympathetic nerves. When facing stress, the sympathetic nerve triggers an alert state, accelerating the heartbeat and constricting blood vessels. When dealing with chronic stress or ongoing fatigue, the sympathetic nerve becomes overly activated and tightly constricts the tiny blood vessels at the tips of the hands and feet, much like turning off a faucet. When blood vessels constrict, blood cannot flow properly, resulting in cold extremities and numbness. Over time, this mechanism can contribute to vasospastic disorders such as Raynaud phenomenon.
Second is an issue involving thyroid hormone, which functions as the body's metabolic engine. Thyroid hormone regulates overall metabolism and helps maintain body temperature. When thyroid gland function declines, the metabolic rate drops, reducing heat production throughout the body. This naturally leads to lower body temperature and cold hands and feet, similar to a home without proper heating.
Nutritional deficiencies that directly affect blood circulation must also be considered. Iron is an essential component of hemoglobin in red blood cells. When iron is deficient, the blood cannot transport oxygen effectively, leading to anemia. Because sufficient oxygen and nutrients cannot reach the extremities, cold hands and feet can develop. Vitamin B12 deficiency also impairs nervous system function and can cause numbness in hands and feet.
Finally, peripheral neuropathy must be considered. When peripheral nerves are damaged by conditions such as diabetes or autoimmune diseases, sensory signals sent between the brain and the extremities can misfire. This causes abnormal sensations, such as feeling cold even when the skin is warm, or experiencing tingling and numbness. The Donguibogam observation that impaired blood flow leads to cold and numb limbs reflects modern medicine's understanding of nerve injury and dysfunction caused by blood circulation disorders.
Symptoms of cold and numb hands and feet are not merely seasonal inconveniences. They can be complex signals indicating that vital systems—including the autonomic nervous system, endocrine system, circulatory system, and nervous system—are losing balance. Paying calm and attentive care to these signals helps support your body's overall health.
