Do you think you got sick from the climate?

A medical professional has clarified common misconceptions about how air conditioning affects health, emphasizing that while climate systems themselves do not cause illness, their misuse can lead to discomfort and exacerbate existing conditions. Dr. Ema Cindro Kostelec, a physician who discusses medical topics in accessible language through her social media profile, explained that cold air from air conditioners does not directly cause infections such as the common cold. Instead, symptoms often attributed to being "caught in the climate" are typically due to dryness and irritation of mucous membranes caused by prolonged exposure to conditioned air. Dr. Kostelec noted that many people mistakenly believe that sitting in a cooled room leads to illness. However, she stressed that viruses, not temperature alone, are responsible for contagious diseases. The dry and cool air produced by air conditioners can irritate nasal passages, throat, and eyes, leading to symptoms such as a sore throat, dry cough, and a stuffy nose. These symptoms are frequently misinterpreted as signs of a cold or flu, even though they are not caused by infection. The dryness of air conditioned environments can significantly impact the body's natural defenses. Mucous membranes lining the respiratory tract serve as a crucial barrier against pathogens, trapping particles and microbes before they can enter deeper into the lungs. When these membranes become too dry, their protective function diminishes, making individuals more susceptible to viral infections if exposed to them. This does not mean that being in an air-conditioned space will necessarily result in illness, but it can create conditions that make one more vulnerable should they come into contact with a virus. Another concern raised by Dr. Kostelec involves the maintenance of air conditioning units. If filters are not regularly cleaned and serviced, dust, dirt, and microorganisms can accumulate within the system. During operation, these contaminants can be released back into the environment, potentially worsening indoor air quality. This is particularly problematic for individuals with allergies, asthma, or sensitive respiratory systems. Proper cleaning and maintenance of air conditioning units are essential to ensure optimal performance and reduce the risk of airborne contamination. It is also important to avoid setting the thermostat to excessively low temperatures. While there is no universal guideline for ideal indoor temperatures, Dr. Kostelec recommended keeping the environment comfortable based on individual needs, health status, and activity levels. For most people, a range of approximately 22 to 26 degrees Celsius is considered pleasant. She cautioned against overcooling spaces, noting that excessive cooling does not provide additional benefits compared to heating during colder months. Direct airflow from air conditioners onto the face or body can cause discomfort, including a sensation of chill and localized cooling. To mitigate these effects, individuals should take steps such as drinking enough fluids, ensuring regular ventilation of rooms, and using saline solutions to moisten dry nasal passages when necessary. Dr. Kostelec emphasized that moderate use of air conditioning, combined with proper maintenance and attention to humidity levels, can help prevent discomfort and maintain overall well-being. Air conditioning units, when used appropriately, do not cause illness. However, improper usage can lead to dryness and irritation of the respiratory tract, resulting in symptoms that are often mistaken for a cold. Understanding the correct use and maintenance of these devices is key to minimizing potential health risks associated with their use.