Immune health and seasonal respiratory virus myths

As autumn approaches, experts are clarifying common misconceptions regarding immune health and seasonal illnesses. While the transition to colder weather and shorter daylight hours coincides with an increase in respiratory infections, medical professionals emphasize that the change in season does not inherently cause an immune system collapse. Instead, it represents a period of physiological adaptation to changing environmental conditions.

Regarding nutrition, there is a common myth that increasing Vitamin C intake can prevent colds. However, for individuals with balanced diets, supplemental doses do not provide an automatic barrier against seasonal viruses. Similarly, there are no products capable of instantly “activating” the immune system.

While cold temperatures do not create viruses, they can facilitate infection. Low temperatures can cool nasal mucosa and slow the movement of cilia, making mucus clearance less efficient. This biological response, combined with increased time spent in enclosed, heated, and dry environments, can create conditions that allow viruses like rhinovirus to adhere more easily to the respiratory tract.