Wet feet do not cause SARS directly, but they can disrupt immune function and contribute to the development of a cold. This observation comes from an INVITRO therapist, Ivan Romasov, speaking with socialbites.ca.
According to the expert, feet require strong blood flow. Normal skeletal muscle tone and healthy vessel function with proper valves ensure venous blood returns efficiently to the heart. When feet cool, the blood vessels constrict gradually, and some blood can flow back from the skin into the cooled bloodstream to reduce heat loss and stabilize body temperature, which can intensify vasospasm.
What starts as a local spasm with increased blood flow can become a systemic spasm, narrowing small vessels throughout the body, including the capillaries in the nasal mucosa. The nasal mucous membrane then produces mucus that serves as a first line of defense against infections. About 10 percent of inhaled microorganisms remain on this lining. At the same time, capillary spasm in the nasal mucosa can reduce the work of the ciliary epithelium, which plays a crucial role in clearing mucus from the nasal cavity into the nasopharynx to help prevent respiratory infections. In the intestines, the immune system recognizes microorganisms in the mucus and produces antibodies specific to that infection. If the mucus is not effectively cleared, mucus in the nasal cavity can thicken, potentially impairing immune defense and increasing the risk of infections. This sequence helps explain why the risk of a cold may rise in such conditions, noted the doctor.
However, wet feet do not instantly trigger these events. Prolonged exposure to moisture is needed to significantly cool the legs and start a cascade of consequences. Some factors can accelerate this process, such as cold wind meeting wet feet, which can quickly promote hypothermia and a cold.
The therapist pointed out that the most serious consequences tend to affect those with chronic illnesses, including heart failure, kidney and liver diseases, immune deficiencies, ENT disorders, and bronchopulmonary conditions.
If socks become wet, the first step is to replace them with dry ones and to dry or change shoes as soon as possible.
If immediate drying is not possible, preventing a systemic outcome like hypothermia is important. Drinking a hot beverage can help raise whole-body temperature. It is wise to avoid alcohol for warming, because alcohol can cause temporary blood vessel dilation followed by stronger vasospasm, which may worsen hypothermia.
In a warm room, excessive dryness should be avoided because it can reduce mucus production in the nasal cavity. A humidifier can help maintain comfortable humidity and support nasal moisture.
Hot baths, baths, and saunas can warm the body, but they primarily affect the surface. It takes time for a systemic warming effect. A practical approach is to begin by warming with a hot drink. If hypothermia occurs, the main priority is to stay warm. Adequate sleep, rest, and a calm environment support overall immune health and help reduce the likelihood of colds, stated Ivan Romasov, the INVITRO therapist.
Socialbites.ca previously explored illnesses that are easiest to catch in public spaces.