Mistakes during heatwaves that can increase heatstroke risk

As heatwaves intensify and become more prolonged, individuals are increasingly at risk of heat exhaustion and dangerous heatstroke. However, many people unknowingly make critical errors that exacerbate these dangers, often stemming from common misconceptions about staying cool and hydrated.

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Thirst is actually a late sign of dehydration – the body is already lacking fluid.

A primary mistake is waiting until thirst sets in before drinking. Experts emphasize that thirst is a late indicator of dehydration, meaning the body is already lacking essential fluids. Regular, consistent hydration throughout the day is crucial, even without feeling thirsty. Furthermore, opting for ice-cold water can be counterproductive; it constricts blood vessels, hindering the body's ability to release heat, and can shock the digestive system. Water at room temperature is more easily absorbed and recommended.

Beverages like alcohol and those high in caffeine or sugar should also be avoided. These drinks have a diuretic effect, increasing fluid loss and accelerating dehydration, which is detrimental when the body needs to sweat and cool itself. During intense heat, the body loses vital electrolytes through sweat, making electrolyte-rich drinks or light soups beneficial, especially after physical activity.

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Ice-cold water causes vasoconstriction, which reduces the body's ability to release heat. Besides, it can cause shock to the digestive system.

Another common point of confusion is home ventilation. While opening windows might seem intuitive, experts advise keeping windows and blinds closed during the hottest parts of the day if the outside temperature is higher than indoors. This traps cooler air inside. Ventilation is most effective during the cooler evening and early morning hours, when a cross-breeze can replace stale, hot air with fresher, cooler air. Fans, while providing a cooling sensation, do not lower air temperature and can even be detrimental in a completely hot, enclosed space.

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Preserve the last bit of cool air in the house.