Heat exposure can lead to dehydration in the body, which poses serious health risks. For example, when moving between indoor spaces with continuous air conditioning, abrupt changes in temperature can constrict blood vessels, impede blood circulation, and increase the likelihood of heat stroke and stroke.
Dr. Nguyen Thi Thuy Hau from the Department of General Internal Medicine at Tam Anh General Hospital in Hanoi warns about the risks of improper air conditioning usage. Setting the air conditioner to a temperature significantly lower than the ambient temperature can trigger heat stroke by causing rapid changes in body temperature, leading to adverse health consequences.
People, especially those who are exposed to sudden and extreme temperature changes, are at a higher risk of experiencing heat stroke. Individuals like outdoor workers, young children, the elderly, pregnant women, and those with underlying health conditions such as cardiovascular diseases, hypertension, and diabetes are particularly vulnerable to heat-related illnesses.
Air conditioning itself does not cause heat stroke directly. However, hot weather can elevate body temperature, resulting in dehydration and electrolyte imbalances. Prolonged exposure to low temperatures from air conditioning can further contribute to dehydration, which can have detrimental effects on overall health.
Symptoms of heat stroke may include skin redness and dryness, increased body temperature, fatigue, headaches, difficulty breathing, dizziness, and altered consciousness. Additionally, temperature differences caused by air conditioning can lead to allergic reactions, dry eyes, and throat irritation, making individuals more susceptible to respiratory infections.
To mitigate the risk of heat stroke from air conditioning, it is advised to maintain a room temperature between 25-28 degrees Celsius. Alternating between using an electric fan and air conditioning can help regulate temperature effectively. It is also recommended to wait for a few minutes after returning from outdoor heat before turning on the air conditioning to allow the body to adapt gradually.
Furthermore, individuals should drink an adequate amount of water to prevent dehydration and maintain proper blood circulation. Regular ventilation, air conditioner maintenance, and taking breaks from continuous air conditioning can help reduce health risks associated with prolonged exposure to cool indoor environments. By following these practices, individuals can better safeguard their health and well-being during hot weather conditions.