Buzz
When the temperature soars to extreme levels combined with high humidity, it feels as though a thick, oppressive blanket is surrounding you. Interestingly, the combination of heat and humidity significantly raises the likelihood of experiencing heat stroke.
Understanding the Differences Between Dry Heat and Humid Heat
The key distinction between dry and humid heat lies in how humidity interferes with the evaporation of sweat from your skin's surface, which plays a vital role in helping your body cool down.
According to Neil Gandhi, an emergency physician at Houston Methodist Hospital, the heat and humidity can make it harder for your body to cool down effectively. 'When the air is drier, perspiration evaporates much more easily from your skin,' he said. 'But added humidity prevents sweat from dissipating properly, making it harder to cool off.'
When sweat clings to your skin instead of evaporating, it can make you feel warmer than you truly are. The heat index, which reflects the combination of air temperature and humidity, determines how hot it actually feels. As the heat and humidity increase, so does the heat index, making the conditions feel even hotter.
How to Prevent Heat Stroke
Gandhi often observes a rise in heat stroke cases during the early summer when people aren't fully accustomed to the high temperatures, during intense heat waves with elevated heat index values, or at the start of the school year when football practice begins.
One crucial way to prevent heat stroke is through heat acclimatization, which involves gradually allowing your body to adjust to hotter weather. This process, which takes days or weeks, helps your body adapt by improving sweat efficiency, increasing blood flow to the skin, and allowing you to function at a lower heart rate and cooler core temperature. 'Your body is an extraordinary machine,' Gandhi remarked. 'The more time it has to adapt, the better.'
There are additional strategies to prevent heat stroke, such as reducing your exposure to extreme heat. This can be done by staying indoors during the hottest part of the day and ensuring proper hydration. Plain water is sufficient, but if you find that drinking fluids with salts helps you feel better, 'you should absolutely continue doing that,' Gandhi stated. 'According to the evidence, salts are not harmful, which means small amounts won’t cause harm. However, from a physiological standpoint, water is just as effective as any sports drink.'
Recognize the Warning Signs of Heat Stroke
Heat stroke can manifest through symptoms such as confusion, loss of consciousness, vomiting, dry and hot skin, excessive sweating, and an extremely high body temperature. If you notice these symptoms in yourself or someone else, it is crucial to seek medical assistance right away. Special care should be taken with young children and older adults, as they are more vulnerable to heat stroke.
'This is a real medical emergency,' Gandhi remarked. 'That person needs to go to the emergency department immediately. If not, the damage could be irreversible.' However, if identified and treated early, 'the recovery is generally very good for most patients,' he added.
