The human body maintains a constant temperature to ensure optimal physiological functions. It is often said that a drop of just one degree Celsius in body temperature can reduce immunity by up to 30%. While the accuracy of this statistic may be debated, the close relationship between body temperature and immunity is undeniable. The immune system requires an appropriate temperature to function efficiently, and a lower body temperature increases the risk of illness. Why does a drop in body temperature weaken immunity, and how can we maintain an optimal temperature to protect our health?

The effect of body temperature on immunity is linked to several physiological processes. Firstly, a lower body temperature reduces the activity of white blood cells. Natural killer (NK) cells and macrophages, which play a crucial role in defending against pathogens, become less effective. As a result, when viruses or bacteria invade the body, the immune response slows down, making infections more likely to spread. Additionally, poor blood circulation due to low body temperature makes it difficult for immune cells to reach affected areas quickly, further weakening the immune response.

A decrease in body temperature also affects metabolism. When body temperature drops, metabolic processes slow down, leading to insufficient energy supply for immune cell function. This weakens the immune response and makes the body more susceptible to infections. Furthermore, the gut environment, which is responsible for over 70% of immune functions, is also affected. A lower body temperature can disrupt the balance of gut microbiota, reducing beneficial bacteria while increasing harmful bacteria, ultimately impairing immunity.

To prevent these issues, maintaining a stable body temperature is crucial. The most fundamental method is keeping warm. Wearing appropriate clothing in cold environments and drinking warm beverages help protect body temperature. A balanced diet rich in essential nutrients also supports temperature regulation. Protein and vitamin C, in particular, are known to enhance immunity. Regular exercise promotes blood circulation, helping maintain a consistent body temperature. Adequate sleep is equally important, as deep and sufficient rest allows immune cells to regenerate, strengthening the body’s defense system.

The connection between body temperature and immunity is undeniable. During colder seasons or in environments with sudden temperature changes, it is essential to be mindful of body temperature regulation. Healthy lifestyle habits play a vital role in strengthening immunity. The first step in maintaining a strong defense system is protecting body temperature. By adopting simple daily practices to keep warm, we can significantly contribute to overall health and well-being.