Taking precautions can help mitigate the dangers of extreme heat.
Delhi and many parts of north India are grappling with a severe heatwave, with temperatures reaching a scorching 50 degrees Celsius in the city on Wednesday. This record-breaking measurement comes just a day after the city surpassed its previous high of 49.9 degrees Celsius.
The extreme heat poses a significant challenge for many Delhi residents. Authorities are warning of water shortages, while the India Meteorological Department (IMD) highlighted the severe dangers to health of such extreme heat. While the scorching temperatures are concerning, staying indoors for extended periods is not a viable option for a large portion of the population who rely on daily outdoor work to earn a living.
Despite the difficulty of avoiding the heat, awareness of the dangers and their symptoms is crucial. Understanding the negative health impacts of this weather can help residents take necessary precautions.
Heat is a silent killer, causing numerous deaths during the summer. How does the body respond to rising temperatures? Let's explore this further.
How Your Body Reacts to Extreme Heat:
Our bodies have two main mechanisms to stay cool: vasodilation and sweating. Vasodilation widens blood vessels near the skin's surface, allowing heat to escape. Sweating cools the body as it evaporates, but it also removes salts vital for muscle function. Dehydration and electrolyte imbalance can lead to heat cramps, the mildest heat-related illness.
Heat Cramps - The Warning Sign:
Heat cramps are characterized by muscle cramps, typically in the legs and abdomen. This occurs because the body is losing fluids and electrolytes faster than it can replace them.
Heat Exhaustion - When the Body Struggles to Cool Down:
As the core temperature rises further, heat exhaustion sets in. Symptoms include heavy sweating, dizziness, fatigue, nausea, headache, and a weak, rapid pulse. This happens because the body is pumping more blood to the skin's surface to cool down, leading to increased heart rate and potential dehydration.
Heatstroke - The Most Serious Threat:
Heatstroke is the most severe heat-related illness and can be fatal if left untreated. If core temperature rises above 40°C (104°F), the body's cooling mechanisms fail. Sweating may stop, and the skin may become hot and dry. Other symptoms include rapid, shallow breathing, confusion, slurred speech, and seizures. In severe cases, coma or death can occur. The kidneys are often the first organs to fail, as they can no longer remove toxins from the blood.
Staying Safe During a Heatwave:
During extreme heat, it's crucial to stay hydrated by drinking plenty of water or electrolyte-rich beverages. Avoid strenuous activity, wear loose-fitting clothing, and seek air-conditioned spaces whenever possible. Be aware of the early signs of heat illness and take immediate action if you experience them.
With rising global temperatures, extreme heatwaves are becoming more frequent and severe. Understanding how your body reacts to heat and taking precautions can help you stay safe during these scorching periods.